Engelund and Hansen formula causing error in sediment inflowEngelund and Hansen formula causing error in sediment inflowhttps://oss.deltares.nl/c/message_boards/find_thread?p_l_id=1806765&threadId=4117202020-11-25T19:53:42Z2020-11-25T19:53:42ZRE: Engelund and Hansen formula causing error in sediment inflowGyan Basyalhttps://oss.deltares.nl/c/message_boards/find_message?p_l_id=1806765&messageId=4127352014-04-14T00:21:27Z2014-04-14T00:21:27ZHi Qinghua,<br /><br />Thank you very much. It worked. Yes you are right that Engelund and Hansen is a total load formula. It is strange that GUI only has the options "sand" and "mud." It would have taken me long to figure it out myself. <br /><br />Using Engelund and Hansen transport formula I was able to run the model with 1 core both in windows and Linux environment (using MPI). But it stops executing when the number of cores is two or more. I should probably start a new thread for this problem.<br /><br />Thanks,<br />GyanGyan Basyal2014-04-14T00:21:27ZRE: Engelund and Hansen formula causing error in sediment inflowQinghua Yehttps://oss.deltares.nl/c/message_boards/find_message?p_l_id=1806765&messageId=4119602014-04-11T07:29:04Z2014-04-11T07:29:04ZHi Gyan,<br /><br />You might specify the SedTyp in .sed file to be "bedload", instead of "sand". Engelund and Hansen formula is in general a total load transport formula, is it? <br /><br />Regards,<br /><br />QinghuaQinghua Ye2014-04-11T07:29:04ZEngelund and Hansen formula causing error in sediment inflowGyan Basyalhttps://oss.deltares.nl/c/message_boards/find_message?p_l_id=1806765&messageId=4117192014-04-10T16:42:53Z2014-04-10T16:40:06ZHello everyone,<br /><br />I have set constant discharge and "sand" inflow of 2000 m3/s and 0.15 kg/m3 respectively at the inflow boundary. Using default transport formula (Van Rijn 1993), there is no problem. However, using Engelund and Hansen formula, I have fluctuating sediment inflow at the boundary. Additionally, there are suspended and bed load components, which shouldn't be the case with this transport formula. The suspended load component is equal to the user-defined sediment input (0.15 kg/m3). It's the bed load component that is fluctuating. Its magnitude is comparable to the suspended load. <br /><br />I have run it in Delft3D versions 3185 (tag), 3426 (tag) and 3504 (trunk). All have this issue. I see that the bed load component is zero until the spin-up period is reached. <br /><br />My transport formula file has following content:<br /><br />1 IFORM<br />#1<br />1<br />#<br /><br />I would appreciate any help. Thanks in advance.<br /><br />-GyanGyan Basyal2014-04-10T16:40:06Z