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[KT] layer

Wed, 10/22/2003 - 1:32am — halikia
Hi I wanted to know that is the [KT] (water surface) layer same for each segment through a water body or not. Because I am modeling a river-reservoir system with a high slope and when I want to connect the river (with the slope of 0.003) to the reservoir (with the slope of 0.0) I always get a warning that there is no active layer in my river branch which is located at the upstream of my reservoir . B.R. Hooman A. [addsig]
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Hydrodynamics
Tue, 10/28/2003 - 10:32am — Tom

You need to make certain that you have separated the river and reservoir into two different waterbodies. Each waterbody can then have a separate KT layer. Also, you need to make certain that the initial water surface elevation for the river section is sufficiently high at all the segments so as to ensure that there is water in the river. Additionally, you need to make certain that there is sufficient inflow to keep water in the river section at all times. As you will find out, river modeling can initially be very difficult to get the model to run on.[addsig]
Tue, 10/28/2003 - 11:09pm — halikia

Hi Tom Thanks for your kind advise. But there is another problem which is that I don
Wed, 10/29/2003 - 7:54am — Tom

I understand better. What you are experiencing is currently a limitation of the model algorithms for adding/subtracting segments. I realized this when first setting up the code for multiple waterbodies and was wondering when this limitation would "rear its ugly head". Currently, the model allows segment addition/subtraction at the upstream end of a branch. What needs to be incorporated into the code is not only segment addition/subtraction at the downstream end of a branch, but the additional ability to add a segment to another branch when subtracting and subtract a segment from another branch when adding. This is extremely complicated coding logic with ramifications everywhere in the code since there are numerous links from one branch to another for structures, gates, pipes, etc.., This will take a long time to add to the code. Unfortunately, I have to have funding to do this, and it is currently very difficult to come by.[addsig]