Group Velocity Calculation for Multiple Wave ComponentsGroup Velocity Calculation for Multiple Wave Componentshttps://oss.deltares.nl/c/message_boards/find_thread?p_l_id=1806765&threadId=15180242020-01-26T21:19:47Z2020-01-26T21:19:47ZGroup Velocity Calculation for Multiple Wave ComponentsHans Khttps://oss.deltares.nl/c/message_boards/find_message?p_l_id=1806765&messageId=15180232018-04-12T20:34:55Z2018-04-12T20:33:34ZHi All,<br /><br />I am a beginning coastal modeler and I haven't been able to find a general equation for wave group velocity, when <strong>more than two components</strong> are involved.<br /><br />It seems that all the equations for group velocity I could find fall into one of the two approaches:<br /><br />1. By taking the derivative of wave frequency with respect to wave number: i.e., del(omega)/del(k)<br /><br />2. By multiplying the phase velocity C by a ratio n.<br /><br />Both approaches, however, assume that the wave group consists of only two individual waves with very similar wave periods.<br /><br />Is there any general equation available that can be used for any arbitrary number of waves with widely different periods?<br /><br />Any help will be greatly appreciated. My apologies if this is such a basic question, but it has been bothering me to a great degree..<br /><br />Thanks.<br /><br />-HansHans K2018-04-12T20:33:34Z