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Showing results 1 to 18 of 18 Search took 0.00 seconds. Search: Posts Made By: Gert-Jan

Forum: CFX November 5, 2018, 15:12

Replies: 49 Simulation of Radial piston pump Views: 2,975 Posted By Gert-Jan I don't have a lot experience with deforming mesh. I don't have a lot experience with deforming mesh.

Forum: CFX November 2, 2018, 06:27

Replies: 49 Simulation of Radial piston pump Views: 2,975 Posted By Gert-Jan Can't upload it somehow. You can download it... Can't upload it somehow. You can download it here: https://we.tl/t-jk5dTykpvB

Forum: CFX November 2, 2018, 06:21

Replies: 49 Simulation of Radial piston pump Views: 2,975 Posted By Gert-Jan I had this example in mind, showing the use of... I had this example in mind, showing the use of multiple coordinate systems in 1 simulation. It shows the movement of rotating immersed solids in a rotating domain. There is no flow. I hope it helps.

Forum: CFX November 2, 2018, 03:28

Replies: 49 Simulation of Radial piston pump Views: 2,975 Posted By Gert-Jan That is why I advised to create a very simple... That is why I advised to create a very simple geometry and calculate the movements of all objects without calculating the flow. To first find out how everything behaves and moves like you want. Start...

Forum: CFX November 2, 2018, 03:26

Replies: 49 Simulation of Radial piston pump Views: 2,975 Posted By Gert-Jan Certainly you can move the mesh in Pre. Go to the... Certainly you can move the mesh in Pre. Go to the mesh i nhe top of your tree and use your RMB for option to translate, scale, rotate or mirror it. Just define two points, e.g. [0,0,0] and...

Forum: CFX October 31, 2018, 15:47

Replies: 49 Simulation of Radial piston pump Views: 2,975 Posted By Gert-Jan I don't understand this. If I am correct, CFX... I don't understand this. If I am correct, CFX creates the Global Axis on the origin (0,0,0). As a check, you can always create a monitoring point with certain coordinates to find where you are in the...

Forum: CFX October 31, 2018, 15:41

Replies: 49 Simulation of Radial piston pump Views: 2,975 Posted By Gert-Jan I know it is possible with immersed solids. I can... I know it is possible with immersed solids. I can share an example which is different but contains the similar settings. I don't know with moving mesh. Maybe there is a limitation on moving mesh...

Forum: CFX October 31, 2018, 03:40

Replies: 49 Simulation of Radial piston pump Views: 2,975 Posted By Gert-Jan Turn on the expert parameter? Turn on the expert parameter?

Forum: CFX October 26, 2018, 08:33

Replies: 49 Simulation of Radial piston pump Views: 2,975 Posted By Gert-Jan Yes. No problem No, not necessary.... Yes. No problem No, not necessary. Certainly, if you have a coarse mesh on either side, it will affect your solution. Therefore, you could perform some tests to check their influence.

Forum: CFX October 26, 2018, 07:28

Replies: 49 Simulation of Radial piston pump Views: 2,975 Posted By Gert-Jan As I already mentioned, you can close the gap.... As I already mentioned, you can close the gap. Then there will be a wall with zero thickness. Do not include this wall in any way in your CFD-calculation. It should be completely absent. Then,...

Forum: CFX October 26, 2018, 06:12

Replies: 49 Simulation of Radial piston pump Views: 2,975 Posted By Gert-Jan Your separating wall and pressure and suction... Your separating wall and pressure and suction chambers are fixed, in the stationary frame. The separating wall will be (almost) perpendicular to your interface. So, it won't be part of the interface....

Forum: CFX October 24, 2018, 11:09

Replies: 49 Simulation of Radial piston pump Views: 2,975 Posted By Gert-Jan I thought the zero thickness wall was the gap of... I thought the zero thickness wall was the gap of 10 mu. If it is a gap of 10 mu, then you have 360° liquid around. If it is a wall of zero thickness (=shell), then you cannot not include this part...

Forum: CFX October 24, 2018, 09:33

Replies: 49 Simulation of Radial piston pump Views: 2,975 Posted By Gert-Jan Put the interface on the circular outerwall of... Put the interface on the circular outerwall of the pressure/suction chamber and gap. Over 360°. As a result, on the inner sideof the interface there will be fluid everywhere. On the outside of the...

Forum: CFX October 24, 2018, 09:13

Replies: 49 Simulation of Radial piston pump Views: 2,975 Posted By Gert-Jan you can let the interface coincide with the outer... you can let the interface coincide with the outer wall of the chamber. It should necessarily be in the middle of the gap

Forum: CFX October 24, 2018, 08:09

Replies: 49 Simulation of Radial piston pump Views: 2,975 Posted By Gert-Jan Yes you need an interface. I think the right... Yes you need an interface. I think the right location will be as indicated by the green circle, see my attachement. (I thought you wanted an interface around your pistons. But neither with moving...

Forum: CFX October 24, 2018, 04:43

Replies: 49 Simulation of Radial piston pump Views: 2,975 Posted By Gert-Jan With immersed solids, you are just blocking off... With immersed solids, you are just blocking off fluid elements with a secondary solid. This solid will move over the fluids elements following your prescribed motion and position. If you have a...

Forum: CFX October 24, 2018, 04:31

Replies: 49 Simulation of Radial piston pump Views: 2,975 Posted By Gert-Jan With moving/deforming mesh, I would suggest to... With moving/deforming mesh, I would suggest to leave out the gap. And there won't be an interface. The top wall will move in and out, depending on its angular position. The side walls will adapt....

Forum: CFX October 23, 2018, 13:08

Replies: 49 Simulation of Radial piston pump Views: 2,975 Posted By Gert-Jan immersed solids for the pistons, moving on a... immersed solids for the pistons, moving on a nicely fitted hex mesh inside the channels that get filled and emptied all the time.

Showing results 1 to 18 of 18

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