Hello,
I have a few questions about how to set up my infiltration basin model for studying heat transport.
I have several sets of temperature data with respect to time that I am hoping to input/use for model calibration. They are as follows:
1. Ambient air temperature
2. Inlet flow temperature from a nearby parking lot
3. Soil temperatures at 10cm and 20cm
4. Outlet flow temperature
From the user manual and previous forum posts, I believe I have figured out how to input the inlet flow temperature. I am using a Type 3 heat transport boundary condition in conjunction with a time variable flux at the inlet of my model, I then entered my time variable temperature data in TValue 1. Is this the correct setup? How can I input the ambient air temperature with respect to time? Would I input the air temperature as another boundary condition at the model surface?
I plan to use the soil temperatures at 10 cm and 20 cm in my objective function with observation points to calibrate my model, this is easy enough to set up. However, for my project, I care more about the outflow temperature and am struggling to find a way to incorporate this into my objective function. Is there a way to accomplish this?
I appreciate any help you can provide. Thank you!
Heat Transport Setup
Re: Heat Transport Setup
The standard HYDRUS software can handle two types of heat transport boundary conditions.
1. Dirichlet (temperature) BC, when the temperature at the boundary is fixed to a specified value.
2. Cauchy (heat flux) BC, when the temperature of water entering the transport domain through the boundary is fixed to a specified value. This means that the heat flux entering the transport domain is associated with inflowing water (i.e., q_h=q_w*C_w*T), i.e., there has to be water entering the soil profile.
In the recent version 5.04 of HYDRUS, we added one more option, where we can define the Cauchy BC directly using the heat flux q_h, while the water flux (q_w) can be equal to zero. This can be used, for example, to simulate heat flux from buried energy cables.
J.
1. Dirichlet (temperature) BC, when the temperature at the boundary is fixed to a specified value.
2. Cauchy (heat flux) BC, when the temperature of water entering the transport domain through the boundary is fixed to a specified value. This means that the heat flux entering the transport domain is associated with inflowing water (i.e., q_h=q_w*C_w*T), i.e., there has to be water entering the soil profile.
In the recent version 5.04 of HYDRUS, we added one more option, where we can define the Cauchy BC directly using the heat flux q_h, while the water flux (q_w) can be equal to zero. This can be used, for example, to simulate heat flux from buried energy cables.
J.