Delft3DDelft3D community sitehttps://oss.deltares.nl/c/message_boards/find_category?p_l_id=1806675&mbCategoryId=02020-07-14T13:12:54Z2020-07-14T13:12:54ZError when starting simulation in FLOWEsther Espinozahttps://oss.deltares.nl/c/message_boards/find_message?p_l_id=1806675&messageId=18294502018-05-10T18:18:08Z2018-05-10T18:18:08Z<p>Hi, I really hope someone can help me. I want to start a simulation in Flow and as you can see in the attached figures, I think I'm following the correct steps , but I can't even choose the .mdf file.</p> <p>After I created all the files and the .mdf I select the working directory (folder with all files including .mdf) choosing the option of the Flow menu, but When I click on "Start" to run the simulation a small window to choose the .mdf file appears with "default.inp" so I click on "browse" to search the file in a different folder (because even if I previously defined the working directory, that folder doesn't open so I need to change the folder) when I find the .mdf I select it but a message appears saying "Switching to other directory not allowed here. Please, stay in current directory and try again".</p> <p> </p> <p>I don't know what I'm doing wrong. When I click browse the directory is C:/ but my working directory folder is on a external hard drive F:/. I know that is not the problem because I moved my folder to C:/ but the error continued.</p> <p> </p> <p>Thank you for your help.</p>Esther Espinoza2018-05-10T18:18:08ZHow to consider sea level rise escenarios with Delft3D Flow?Esther Espinozahttps://oss.deltares.nl/c/message_boards/find_message?p_l_id=1806675&messageId=15008762018-03-27T07:54:19Z2018-03-27T07:54:19ZHi, I want to use Delft3D to simulate different escenarios of sea level rise in an estuary. <br /><br />In a previous work I simulated water levels in a time series format using for the open boundary tide gauge measurements for two different periods of time of the year. Now I would like to use the same input data to simulate different sea level rise escenarios (Since I do not have tidal constituents). Is there a way to incorporate a sea level rise rate in the model? <br /><br />Thank you in advance for your help.Esther Espinoza2018-03-27T07:54:19ZHow to consider sea level rise escenarios with Delft3D Flow?Esther Espinozahttps://oss.deltares.nl/c/message_boards/find_message?p_l_id=1806675&messageId=15008602018-03-27T07:35:09Z2018-03-27T07:35:09ZHi, I want to use Delft3D to simulate different escenarios of sea level rise in an estuary. <br /><br />In a previous work I simulated water levels in a time series format using for the open boundary tide gauge measurements for two different periods of time of the year. Now I would like to use the same input data to simulate different sea level rise escenarios (Since I do not have tidal constituents). Is there a way to incorporate a sea level rise rate in the model? <br /><br />Thank you in advance for your help.Esther Espinoza2018-03-27T07:35:09ZWater level simulation with astronomic components are the sameEsther Espinozahttps://oss.deltares.nl/c/message_boards/find_message?p_l_id=1806675&messageId=14341202018-01-21T07:06:33Z2018-01-21T07:06:33ZHi, first of all sorry if this is too obvious to ask. <br /><br />I want to model water level using astronomic components for april and june of the same year for the open boundary, because I also want to simulate water level but using time series data for the same months (tide gauge data) in order to obtain the difference between both series which would be the meteorological tide. However, the results for both months, april and june, using the astronomic components are exactly the same so the highs and lows do not coincide with the results simulated with the time series data. I did two simulations with the astronomic components, one for each month. So, how do I make the model consider time for each month? <br /><br />Then, I did just one simulation from april to june which obviously took more time. The results for april and june were different but the phase lag was not gone, even though it was reduced a little bit I can't use those results to obtain the meteorological tide. How do I solve this? Is it necessary to simulate the whole period in one simulation? What about if I want to simulate the same month for two different years? I will take a lot of computational time for that.<br /><br />The astronomic components for both months were almost the same, there was no considerable difference.<br /><br />Thanks!Esther Espinoza2018-01-21T07:06:33ZRE: PROBLEM: water level results with double peaks. Results aren't smoothEsther Espinozahttps://oss.deltares.nl/c/message_boards/find_message?p_l_id=1806675&messageId=14341012018-01-21T06:27:25Z2018-01-21T06:27:25ZThanks for your answer. The double peaks were everywhere through the domain. The problem was solved by interpolating the hourly data input for the open boundary to a 10 min interval. The peaks were gone, the curve was smooth and the statistical parameters were a little bit better. I'm not sure why the hourly data was a problem, but it was solved. I think it was on the high and lows because there were not enough points due to the hourly data.Esther Espinoza2018-01-21T06:27:25ZRE: PROBLEM: water level results with double peaks. Results aren't smoothEsther Espinozahttps://oss.deltares.nl/c/message_boards/find_message?p_l_id=1806675&messageId=14340972018-01-21T06:21:59Z2018-01-21T06:21:59ZThanks for your answer. I did try different values for the reflection parameter but there was no difference in the results, I don't know why, but the curves were exactly the same for different values. However, I solved the problem interpolating the hourly data input for the open boundary to a 10 min interval. The peaks were gone, the curve was smooth and the statistical parameters were a little bit better.Esther Espinoza2018-01-21T06:21:59ZPROBLEM: water level results with double peaks. Results aren't smoothEsther Espinozahttps://oss.deltares.nl/c/message_boards/find_message?p_l_id=1806675&messageId=14219712018-01-06T19:06:45Z2018-01-06T19:06:45ZHi, I'm simulating water level for a month period in an estuary and the results in the three monitoring stations have double peaks on almost all the data set, it is not smooth compared to the observed data even though the statistical indicators are fine. I have just one open boundary at the mouth of the estuary, I have used manning values between 0.012 and 0.030 and the eddy viscosity between 10-100. Also, I've done simulations with a reflection parameter alpha of 0 and 100 but it haven't solved the problem.<br /><br />I'm just simulating water level and I'm just considering what I've mentioned before, the open boundary input data is in a time series format from tide gauge measurements of an institute, I plot that data and it is not a perfect smooth sinusoidal curve but it does not show double peaks (just in two peaks I think but it was small).<br /><br />I read in another post a recommendation to smooth the bathymetry, which I did once and the results were not better. I will attach the graphics and I hope you can help me with this. <br /><br />Thanks!<br /><br /> Note: The graphics don't show the complete month just a few days so the peaks can be seen but the whole month shows double peaks.<br /><br /><br /><br /><a href="https://www.dropbox.com/s/wttkjfq0a2bvvuy/grid-bat-obspoints.JPG?dl=0">grid bathymetry and obs points</a><br /><br /><br /><a href="https://www.dropbox.com/s/9p72zw0x4a7yrqw/double%20peaks.JPG?dl=0">double peaks</a><br /><br /><br /><a href="https://www.dropbox.com/s/7qqt79mvhl44vtq/open%20boundary%20data.JPG?dl=0">open boundary data plot</a><br /><br /><img src="https://www.dropbox.com/s/yfe8on7lpi5rlgk/obs_points%20results%20plot.JPG?dl=0" />Esther Espinoza2018-01-06T19:06:45ZPROBLEM: water level results with double peaks. Results aren't smoothEsther Espinozahttps://oss.deltares.nl/c/message_boards/find_message?p_l_id=1806675&messageId=14219572018-01-06T19:00:27Z2018-01-06T18:35:18ZHi, I'm simulating water level for a month period in an estuary and the results in the three monitoring stations have double peaks on almost all the data set, it is not smooth compared to the observed data even though the statistical indicators are fine. I have just one open boundary at the mouth of the estuary, I have used manning values between 0.012 and 0.030 and the eddy viscosity between 10-100. Also, I've done simulations with a reflection parameter alpha of 0 and 100 but it haven't solved the problem.<br /><br />I'm just simulating water level and I'm just considering what I've mentioned before, the open boundary input data is in a time series format from tide gauge measurements of an institute, I plot that data and it is not a perfect smooth sinusoidal curve but it does not show double peaks (just in two peaks I think but it was small).<br /><br />I read in another post a recommendation to smooth the bathymetry, which I did once and the results were not better. I will attach the graphics and I hope you can help me with this. <br /><br />Thanks!<br /><br /> Note: The graphics don't show the complete month just a few days so the peaks can be seen but the whole month shows double peaks.<br /><br /><br /><br /><a href="https://www.dropbox.com/s/wttkjfq0a2bvvuy/grid-bat-obspoints.JPG?dl=0">grid bathymetry and obs points</a><br /><br /><br /><a href="https://www.dropbox.com/s/9p72zw0x4a7yrqw/double%20peaks.JPG?dl=0">double peaks</a><br /><br /><br /><a href="https://www.dropbox.com/s/7qqt79mvhl44vtq/open%20boundary%20data.JPG?dl=0">open boundary data plot</a><br /><br /><img src="https://www.dropbox.com/s/yfe8on7lpi5rlgk/obs_points%20results%20plot.JPG?dl=0" />Esther Espinoza2018-01-06T18:35:18ZRE: Simulation results are not smooth / double peaksEsther Espinozahttps://oss.deltares.nl/c/message_boards/find_message?p_l_id=1806675&messageId=14214872018-01-05T20:02:48Z2018-01-05T20:02:48Z<div class="quote-title">Fernando Barreto:</div><div class="quote"><div class="quote-content">Hi, What type of boundary condition are you working with? Velocity and water levels in different boundaries (for instance in the north velocity, and in east current) or Riemann bc?<br />If it's the first type, are you using Riemann coefficients to absorb the outgoing waves?<br /><br />Regards, <br />Fernando</div></div><br /><br />Hi, I'm having the same problem with my water level results. Do you know what it might be? I don't know how to solve it. I'm using water level with time series for one open boundary in an estuary. I changed my manning coefficient between 0.012 and 0.030 and the eddy viscosity between 10 and 100. For the reflection parameter alpha I used 0 and 100 but with all the above I still have the same problem. I'm not sure what I'm doing wrong. I'm not considering other parameters just water level.<br /><br />Thanks!Esther Espinoza2018-01-05T20:02:48ZRE: Calibration - Astronomical tide out of phase with tide water level dataEsther Espinozahttps://oss.deltares.nl/c/message_boards/find_message?p_l_id=1806675&messageId=14126732017-12-22T05:28:30Z2017-12-22T05:28:30ZI have the exact same problem. I thought it might be the time zone value but it wasn´t. Have you solved it?Esther Espinoza2017-12-22T05:28:30ZHow to calibrate astronomic tide forcing components?Esther Espinozahttps://oss.deltares.nl/c/message_boards/find_message?p_l_id=1806675&messageId=14018672017-12-08T19:40:02Z2017-12-08T19:40:02ZHi everyone,<br /><br />I'm modelling water level for an estuary just for a month. I am using water level with astronomic forcing as the open boundary. I just have two things, the astronomic components (amplitude, phase) for my open boundary and the observed time series data for the month I'm interested in. I'm not sure how to calibrate the armonic components, since I don't have the corrections or other data. Is there a simple way to calibrate this data? Maybe with statistic as if it were two sets of time series data? <br /><br /><br />Thanks for all the help!Esther Espinoza2017-12-08T19:40:02ZHow to calibrate astronomic tide forcing components?Esther Espinozahttps://oss.deltares.nl/c/message_boards/find_message?p_l_id=1806675&messageId=14017932017-12-08T18:01:31Z2017-12-08T18:01:31ZHi everyone,<br /><br />I'm modelling water level for an estuary just for a month. I am using water level with astronomic forcing as the open boundary. I just have two things, the astronomic components (amplitude, phase) for my open boundary and the observed time series data for the month I'm interested in. I'm not sure how to calibrate the armonic components, since I don't have the corrections or other data. Is there a simple way to calibrate this data? Maybe with statistic? <br /><br /><br />Thanks for all the help!Esther Espinoza2017-12-08T18:01:31ZRE: How to decide the Reflection parameter alpha value? (flow)Esther Espinozahttps://oss.deltares.nl/c/message_boards/find_message?p_l_id=1806675&messageId=14012652017-12-08T03:21:55Z2017-12-08T03:21:55ZThank you so much Bert, it was really helpful!Esther Espinoza2017-12-08T03:21:55ZHow to decide the Reflection parameter alpha value? (flow)Esther Espinozahttps://oss.deltares.nl/c/message_boards/find_message?p_l_id=1806675&messageId=13764092017-11-10T01:18:04Z2017-11-10T01:18:04ZHi, I'm modelling water level for an estuary area (1 month) and I would like to know if you can explain me a little bit about the reflection parameter alpha that it's needed in the bounday section of the flow module. I've read the manual, but I'm not sure how to decide it's value or how big is the influence of that parameter on the results of the water level simulation.<br /><br />Thank youEsther Espinoza2017-11-10T01:18:04ZHow to decide the Reflection parameter alpha value? (flow)Esther Espinozahttps://oss.deltares.nl/c/message_boards/find_message?p_l_id=1806675&messageId=13764052017-11-10T01:16:12Z2017-11-10T01:16:12ZHi, I'm modelling water level for an estuary area (1 month) and I would like to know if you can explain me a little bit about the reflection parameter alpha that it's needed in the bounday section of the flow module. I've read the manual, but I'm not sure how to decide it's value or how big is the influence of that parameter on the results of the water level simulation.<br /><br />Thank youEsther Espinoza2017-11-10T01:16:12ZHow to decide the Reflection parameter alpha value? (flow)Esther Espinozahttps://oss.deltares.nl/c/message_boards/find_message?p_l_id=1806675&messageId=13762842017-11-09T22:04:04Z2017-11-09T22:04:04ZHi, I'm modelling water level for an estuary area (1 month) and I would like to know if you can explain me a little bit about the reflection parameter alpha that it's needed in the bounday section of the flow module. I've read the manual, but I'm not sure how to decide it's value or how big is the influence of that parameter on the results of the water level simulation.<br /><br />Thank youEsther Espinoza2017-11-09T22:04:04ZDifferent reference levels in Delft3d Flow (for water level simulation)Esther Espinozahttps://oss.deltares.nl/c/message_boards/find_message?p_l_id=1806675&messageId=13699242017-11-04T19:25:23Z2017-11-04T19:25:23ZHi I'm modelling water level for an estuary. The reference level of the bathymetry data I got was with respect to the MLWS (Mean Low Water Spring) because the data is taken for navigation purposes. The reference level of the amplitudes (time series) of tides, was with respect to the MWL (Mean Water Level). I modelled an example to see what happens, I got no error. But I'm still wondering if the error about modelling water level (MWL) with bathymetry respect to the MLWS generates significant changes in the results and how Delft3d works with reference levels. Do you know how this difference will influence the results or how can I correct this before or after the simulation? The area I'm modelling is kind of big.<br /><br />Thanks!Esther Espinoza2017-11-04T19:25:23ZRE: Error when creating gridEsther Espinozahttps://oss.deltares.nl/c/message_boards/find_message?p_l_id=1806675&messageId=13698742017-11-04T16:55:52Z2017-11-04T16:55:52Z<div class="quote-title">A D:</div><div class="quote"><div class="quote-content">Hello, <br /><br />Have you found a solution for this? I have the exact same problem.<br /><br />Cheers</div></div><br /><br />Hi, I never really solved it. I just one day decided to reduce the number of splines I was using and it worked fine, the error was gone. I guess maybe it is too much for the computer to process I really don't know. I have to tell you, that I finished the grid without problem but when I got to the interpolation (dep file) process I appeared again. So, it took me a long time to interpolate it, doing it for really small areas for the whole grid (like 6 cells per interpolation) and I finished it. Maybe you can try doing it the same way reducing splines and it could work for you too.Esther Espinoza2017-11-04T16:55:52ZDifferent reference levels in Delft3d Flow (for water level simulation)Esther Espinozahttps://oss.deltares.nl/c/message_boards/find_message?p_l_id=1806675&messageId=13698662017-11-04T16:49:52Z2017-11-04T16:49:52ZHi I'm modelling water level for an estuary. The reference level of the bathymetry data I got was with respect to the MLWS (Mean Low Water Spring) because the data is taken for navigation purposes. The reference level of the amplitudes (time series) of tides, was with respect to the MWL (Mean Water Level). I modelled an example to see what happens, I got no error. But I'm still wondering if the error about modelling water level (MWL) with bathymetry respect to the MLWS generates significant changes in the results and how Delft3d works with reference levels. Do you know how this difference will influence the results or how can I correct this before or after the simulation? The area I'm modelling is kind of big.<br /><br />Thanks!Esther Espinoza2017-11-04T16:49:52ZWhich option to compue cell centre values should I use? (Flow module)Esther Espinozahttps://oss.deltares.nl/c/message_boards/find_message?p_l_id=1806675&messageId=13643262017-10-29T04:41:08Z2017-10-29T04:35:34ZHi, I hope you can help me with this. I'm new with delft3d but I'm using the flow module to model water level, my study area is an estuary. I made the grid and save the dep file but I didn't do it at the cell centers. I mean, when I made the interpolation I never choose grid cell centers, I just finished the whole interpolation and save the dep. <br /><br />So now on the flow module (Domain-Bathymetry) I should choose the option "Values specified at Grid cell corners" right? Then, I'm not sure which of the three options :Max, Mean or Min to choose for "Cell centres values computed using" should I use. Which of these options would be the best for my type of study area?<br /><br />Or maybe I can change the dep saving it at the grid cell centres without doing the whole interpolation again on Quickin?<br /><br />Sorry if this is too obvious to ask. Thanks!<br /><br /><img src="https://espolec-my.sharepoint.com/personal/mareespi_espol_edu_ec/_layouts/15/guestaccess.aspx?docid=1ca051888cef64ec18b989a36c08fd2ad&authkey=AZ5iKQMlwAW_U5BOubR-5LE&expiration=2018-02-26T03%3A35%3A14.000Z&e=84fb02fc64bd4e6c9b0b90c2b3fca53d" />Esther Espinoza2017-10-29T04:35:34Z