Creating cfd solver using udf

durg · October 11, 2018, 10:18

Hello!
I am looking to create a TDMA solver using udf which will be used in fluent. Did anyone try making solver using udf? Please let me know if there is any possibility. I want to solve 1-D species concentration through TDMA in udf which is to be implemented in fluent.

Thank you

pakk · October 15, 2018, 03:31

What is TDMA?

durg · October 15, 2018, 07:33

Tri-Diagonal Matrix Algorithm(TDMA), it is an iterative method of solving partial differential equations by making matrix where the coefficients of variables take in matrix form. The expression form is AB=D, where A is the matrix with the coefficients of variables, B is the matrix with variables and D is the matrix with the constants.

I have to use this method to solve the species concentration equation in 1-D at micro level. I will be writing this method or solver in UDF and further to solve. So, is it possible to solve by making UDF? Since till now, I have learnt that UDF is the way of manipulating variable value from our equations define in UDF and giving to fluent to use the value to solve and fluent has it, own solver. Please throw some light on this.

Thank you

October 11, 2018, 10:18	Creating cfd solver using udf	#1
durg Member Durgesh Join Date: Oct 2018 Posts: 34 Rep Power: 8	Hello! I am looking to create a TDMA solver using udf which will be used in fluent. Did anyone try making solver using udf? Please let me know if there is any possibility. I want to solve 1-D species concentration through TDMA in udf which is to be implemented in fluent. Thank you

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October 15, 2018, 03:31		#2
pakk Senior Member Join Date: Nov 2013 Posts: 1,965 Rep Power: 27	What is TDMA?

October 15, 2018, 07:33		#3
durg Member Durgesh Join Date: Oct 2018 Posts: 34 Rep Power: 8	Tri-Diagonal Matrix Algorithm(TDMA), it is an iterative method of solving partial differential equations by making matrix where the coefficients of variables take in matrix form. The expression form is AB=D, where A is the matrix with the coefficients of variables, B is the matrix with variables and D is the matrix with the constants. I have to use this method to solve the species concentration equation in 1-D at micro level. I will be writing this method or solver in UDF and further to solve. So, is it possible to solve by making UDF? Since till now, I have learnt that UDF is the way of manipulating variable value from our equations define in UDF and giving to fluent to use the value to solve and fluent has it, own solver. Please throw some light on this. Thank you