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Showing results 1 to 9 of 9 Search took 0.00 seconds. Search: Posts Made By: aks

Forum: CFX October 2, 2013, 11:09

Replies: 16 how to use velocity of current time step in next time step to update it Views: 3,743 Posted By aks acceleration is a function of the flow solution... acceleration is a function of the flow solution and so it is being updated every time step

Forum: CFX October 2, 2013, 10:58

Replies: 16 how to use velocity of current time step in next time step to update it Views: 3,743 Posted By aks Hi Edmund, i ran 1 fake... Hi Edmund, i ran 1 fake iteration by setting zero velocity in the additional variable but then i also had to set the velocity of the movingwall equal to some fixed value to run it...

Forum: CFX October 2, 2013, 01:07

Replies: 16 how to use velocity of current time step in next time step to update it Views: 3,743 Posted By aks But i get an error regarding cyclic usage ie.... But i get an error regarding cyclic usage ie. usage of Wallvelocity on both sides of the equation.?

Forum: CFX September 30, 2013, 11:03

Replies: 16 how to use velocity of current time step in next time step to update it Views: 3,743 Posted By aks i need to run a transient case as i need the... i need to run a transient case as i need the transient data for analysis. So, i cannot try the steady state cases but i will try the other option you suggested to use if statement and hope it works....

Forum: CFX September 28, 2013, 13:03

Replies: 16 how to use velocity of current time step in next time step to update it Views: 3,743 Posted By aks Hi Erik, i also tried using... Hi Erik, i also tried using "Update Loop = TRANS_LOOP" and created a new AV by the name oldvel. and then initialized it by giving it a zero value, and used expression newvel in the...

Forum: CFX September 27, 2013, 23:42

Replies: 16 how to use velocity of current time step in next time step to update it Views: 3,743 Posted By aks I ran a transient simulation by using expression... I ran a transient simulation by using expression for the upper moving wall velocity but the acceleration and velocity variation with time are somewhat unexpected as acceleration is negative but the...

Forum: CFX September 24, 2013, 22:35

Replies: 16 how to use velocity of current time step in next time step to update it Views: 3,743 Posted By aks i am just trying a simple case of a rectangular... i am just trying a simple case of a rectangular channel with upper wall moving but with variable velocity. and iam trying to find the velocity of the upper wall . i know the force acting on the wall,...

Forum: CFX September 24, 2013, 10:29

Replies: 16 how to use velocity of current time step in next time step to update it Views: 3,743 Posted By aks i tried using (a) minVal(Velocity u)@object ... i tried using (a) minVal(Velocity u)@object (b) maxVal(Velocity u)@object (c) ave(Velocity u)@object (d) probe(tried at different point on the moving wall )...

Forum: CFX September 24, 2013, 09:24

Replies: 16 how to use velocity of current time step in next time step to update it Views: 3,743 Posted By aks how to use velocity of previous time step in current time step to update it Hi, I am trying to use simple formula: v =u + at, Well i am doing transient channel flow case in CFX. I want to update the velocity of a moving object using the velocity of this body at the...

Showing results 1 to 9 of 9

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