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Showing results 1 to 13 of 13 Search took 0.00 seconds. Search: Posts Made By: JohnPuentes

Forum: CFX August 6, 2014, 02:43

Replies: 25 capability of CFX to solve low Re numbers- Creeping flow (Stokes flow) Views: 4,322 Posted By JohnPuentes Thanks for all the great ideas. I was able to... Thanks for all the great ideas. I was able to identify some problematic regions in my geometry with high residuals for the energy equations. I also identified the problem aof my heating source, which...

Forum: CFX August 1, 2014, 03:15

Replies: 25 capability of CFX to solve low Re numbers- Creeping flow (Stokes flow) Views: 4,322 Posted By JohnPuentes That makes sense now. My die has a variable heat... That makes sense now. My die has a variable heat input. Since a chemical reaction (due to the epoxy nature) generates heat inside the system, the die will decrease the heat input to keep the...

Forum: CFX July 31, 2014, 09:37

Replies: 25 capability of CFX to solve low Re numbers- Creeping flow (Stokes flow) Views: 4,322 Posted By JohnPuentes Thanks. I am working on the residuals output... Thanks. I am working on the residuals output right now. I hope to identify the problematic region soon. Meanwhile, I am playing with different boundary conditions for the Energy equation. I think...

Forum: CFX July 31, 2014, 01:08

Replies: 25 capability of CFX to solve low Re numbers- Creeping flow (Stokes flow) Views: 4,322 Posted By JohnPuentes Glenn and Opaque yes, I activated boundary... Glenn and Opaque yes, I activated boundary advection in all my runs, and I also followed all the rules for walls in solid motion. Still, as opaque mentioned, looking at the convergence for the two...

Forum: CFX July 30, 2014, 13:10

Replies: 25 capability of CFX to solve low Re numbers- Creeping flow (Stokes flow) Views: 4,322 Posted By JohnPuentes Opaque, yes, I am running my model in... Opaque, yes, I am running my model in steady-state. This is my first time simultaneously solving energy for a fluid and a solid. Where do you modify/control this parameter in CFX? Should I look at...

Forum: CFX July 30, 2014, 09:53

Replies: 25 capability of CFX to solve low Re numbers- Creeping flow (Stokes flow) Views: 4,322 Posted By JohnPuentes I ran the catalytic converter tutorial, adding... I ran the catalytic converter tutorial, adding solid motion (0.005 m/s) in the z-direction (direction of the flow), and I obtained the same convergence problem that I have in my model. The model does...

Forum: CFX July 29, 2014, 10:15

Replies: 25 capability of CFX to solve low Re numbers- Creeping flow (Stokes flow) Views: 4,322 Posted By JohnPuentes Thanks for the info Opaque. I am going to add... Thanks for the info Opaque. I am going to add motion to the tutorial to see if it works. That can give me some insight into my boundary conditions problem. To clarify the inlet/ outlet pair,...

Forum: CFX July 29, 2014, 08:33

Replies: 25 capability of CFX to solve low Re numbers- Creeping flow (Stokes flow) Views: 4,322 Posted By JohnPuentes Glenn The flow is driven by the motion of... Glenn The flow is driven by the motion of the solid. I applied the Pulspeed (0.3m/min) to the entire domain (see the attached picture). I consulted the solver theory manual and it says this: ''...

Forum: CFX July 29, 2014, 07:56

Replies: 25 capability of CFX to solve low Re numbers- Creeping flow (Stokes flow) Views: 4,322 Posted By JohnPuentes Here is some info about my model. File 1 ... Here is some info about my model. File 1 This is the geometry (the length is 100 times the thickness). My case study can be approximated to 2D and steady-state. The porous domain is moving...

Forum: CFX July 29, 2014, 02:37

Replies: 25 capability of CFX to solve low Re numbers- Creeping flow (Stokes flow) Views: 4,322 Posted By JohnPuentes Glenn and Alex, I was able to run a basic... Glenn and Alex, I was able to run a basic model without any issues. I think that the laminar flow option of CFX can handle very low Re numbers, but it is important to limit the highest value of...

Forum: CFX July 18, 2014, 02:11

Replies: 25 capability of CFX to solve low Re numbers- Creeping flow (Stokes flow) Views: 4,322 Posted By JohnPuentes Thanks Glenn. I am working on a sensitivity... Thanks Glenn. I am working on a sensitivity analysis. I will update everyone whether or not CFX works for my model.

Forum: CFX July 17, 2014, 04:17

Replies: 25 capability of CFX to solve low Re numbers- Creeping flow (Stokes flow) Views: 4,322 Posted By JohnPuentes Thank you Alex for the update. In my problem,... Thank you Alex for the update. In my problem, inertia is always negligible because Re numbers are always lower than one. I am concerned about convergence, because these type of problems are...

Forum: CFX July 17, 2014, 02:32

Replies: 25 capability of CFX to solve low Re numbers- Creeping flow (Stokes flow) Views: 4,322 Posted By JohnPuentes capability of CFX to solve low Re numbers- Creeping flow (Stokes flow) Hi everyone, I am working on a flow problem that deals with Re numbers lower than 1. I am modeling a resin flowing through a porous medium at a very low speed, 0.4m/min (0.00667 m/s), with high...

Showing results 1 to 13 of 13

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