Heat Transfer in Flow Network in Flownex
Suppose that we want to add heat transfer to the system, for example, for one of the pipes. Let's go back to the components we have here and look for heat transfer options. We have different elements for transferring heat, and we consider composite heat transfer. I can add it to any of these pipes as needed. Suppose I place it here.
Adding Heat Transfer Element
Click on the heat transfer element. It is a composite heat transfer element. In the properties table, I can define the upstream and downstream entities and the mechanism for heat transfer, such as conduction or convection.
Defining Layers for Conduction
- Click on the conduction layer option to add a layer for conduction.
- Define the properties for the layer, including the geometry and thickness of the element in the direction of heat transfer.
- Use a thickness of 5 centimeters as an example.
- Add additional layers as necessary.
Material Data
- Select the material from the data reference.
- Consider the material type, such as metal plates or carbon steel, which is already given.
- Confirm the selection by clicking "OK".
The layer is added with number zero. I also added a node above the heat transfer element to apply boundary conditions.
Applying Boundary Conditions
For the heat transfer element, you can add a node above it and use other specifications for heat transfer elements. For example, for conduction, I added a layer here. For the conduction area, I can use either upstream or downstream, depending on the example, such as a crude oil example. I use the downstream option.
Adding Convection
- Convection can be added for upstream or downstream.
- Change the transfer boundary condition to convection.
- Convection options include ambient or network specification.
- Specify the area if given, or leave it as defined for conduction.
- Set the convection coefficient as constant or provide a formula.
- Example: Use a constant value of 1000 for the convection coefficient.
- Specify the ambient temperature.
Review
For this example, convection is defined at both ends, upstream and downstream. On each side, ambient conditions in terms of temperature, convection area, and convection coefficients need to be defined.
Thank you so much for your attention.
Title: Heat Transfer in Flow Network in Flownex Suppose we want to add heat transfer to the system, for example, for one of the pipes. Among the components we have, look for heat transfer. We have different ways to transfer heat. Consider composite heat transfer. I can add it to each pipe I want.
Suppose I put it here. Now click on the heat transfer element. It is a composite heat transfer, as you can see. Click on that, on the heat transfer element. It is a composite heat transfer as you can see.
In the tables for properties, I can define the upstream and downstream entities and the heat transfer mechanism, such as conduction, convection, or others. Now, come here, and you can see that we have layers for conduction. If I click on that, I can add a layer for conduction.
Now, I can add a layer for conduction. Add one here, click on this one, and I can define the properties for the layer for the heat transfer element. I need to define the geometry to set the thickness of the element in the direction of heat transfer.
I will use five centimeters if I consider the other direction of heat transfer. I can add the geometrical properties and the layer. I can add one more, so three for the material data.
If I go and say that I select from the data reference, here, for the material, I need to consider what the material is. It is metal plates, and I consider carbon steel, which is given. I said okay, hit okay. As you see, the layer is already added with number zero.
I also added a node above the heat transfer element if I want to apply the boundary conditions there for the heat transfer element. I can add a node above the heat transfer element and use the other specifications for the heat transfer element. For example, for conduction, I can add this layer here.
For the conductive area, I can use upstream or downstream for my example. I use downstream for the crude oil example. I set the information for the conduction. How about if I want to add convections there as well? It could be for upstream or downstreams.
I can add convection or radiation or whatever here. Suppose, for the opposite stream, I want to change it to convection. For the convection options, it could be to the ambient, to the network specification, or whatever. Usually, I leave it just ambient for the area.
It could be specified if it's given or just left as is for the convection coefficient. It could be constant or I can give it a formula for that. I just leave it as constant.
The magnitude, the value for the convection coefficient, could be something like 1000. I need to specify the ambient temperature. Almost done for that. Just one more thing about the convection coefficient. I will give you the formula for that downstream.
For the downstreams, I can consider it transferred again. I consider convection area just given from the conduction already defined for the layer zero. I can add the magnitude for the convection coefficient there, like 60. So, a review: that's what I have done for the heat transfer.
As I drew this picture, I was thinking about the current conditions, heat transfer coefficient, whether simple or negative towards upstream or downstream for the convection and radiation. So, I defined convection at both ends, upstream and downstream.
On each side, I need to define the ambient conditions in terms of the temperature and also the convection area and convection coefficients. I think we're done for this part. Thank you so much. Thank you.
