Hi everyone,
I had solved a 2D transient problem as attached, fig.1. The inner circle has constant temperature as a boundary condition. I made a path to get the temperature on the outer half circle as shown in fig.2, where here the temperature is a function of distance(m) from the position where Theta= - pi/2 to Theta= pi/2. I would like to get the temp. as a function of Theta (from -pi/ to pi/2) NOT distance in WORKBENCH ansys. Also, how can I get the average temp. on that half circle at each time? By the way, my coordinate system is Cartesian, so I do not know whether I need to transform it to cylindrical one or not. If so, how can I do this, please?
Any help with solved example or web link will be really appreciated!
Thanks!
Hi Mohammed,
to make your daily work easier with such situations, I suggest that you copy'n paste your table and make the rest of your evaluation in a table spread sheet (e.g. Excel).
Just mark the tabular data, copy with ctrl+c, insert this in Excel (ctrl+v). Your Path length L is then simply the fraction of the circles perimeter.
L = Theta/360° * 2 * Pi * Radius
Then you can calculate Theta from the given L in Excel.
In Excel it should be easy to evaluate the average temperature over the path.
In general, when averaging measured data, you should consider a weight function in reliance to your sampling rate. So, the average is not simply Sum_i Value_i / n,
instead you multiply it with weights g_i that are proportional to the partition of your path length portions length_i - length_(i-1).
The average A is then: A = Sum_i (g_i * Value_i) / Sum_i g_i
Hi Markus,
Thank you for your response,
You are absolutely right of how to get the Theta and the average values mathematically in a table spread sheet (e.g. Excel).However, it is very difficult and unpractical way to solve problem that has at least 1000 sub-steps , time intervals, and you know that graph was just at one time step, and hence we need to do at least 1000 operation calculation to get the average value at each time step. in fact, I'm looking for a way to get the average value in separate text file that includes all the values of temperature on that half circle radius and its average value at EACH time step(interval) by using workbench ansys!
Thank!
You have go for simple method.
The thing is as per geometry find out angle. But, parameter of bending angle input in ansys with temp parameter. But, what is your geometry. Generally, thermal analysis is good (static).
Hi Tanna,
The geometry of 2D transient conduction heat transfer problem and the data (graph) of temperature at specific time are basically attached above with the origin inquiry. Now, the question is how to get the average temperature of the attached graph of data at that time and how to represent the data and their average at many different time steps, let us say, in a separate text file.
Thanks!
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