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-   -   UDF for dragonfly motion including inclined stroke plane deivation (https://www.cfd-online.com/Forums/main/168827-udf-dragonfly-motion-including-inclined-stroke-plane-deivation.html)

arunraj March 30, 2016 00:56

UDF for dragonfly motion including inclined stroke plane deivation
 
Hi everyone,

Do you have any UDF for dragonfly motion including stroke plane deviation. I am trying to simulate the dragonfly motion as given by Z JANE WANG. But I am not yet succeeded. It seems to be very difficult for me as I am new to UDF concept.

In that he has used 2-D cross sectional Wing executing the following motion

Center of chord is given by
x(t) = A0/2 * (1+cos(2*pi*f*t))*cos beta
y(t) = A0/2 * (1+cos(2*pi*f*t))*sin beta

Here A0 (amplitude of translation) = 2.5 ; f(frequency)=1 ; beta(stroke plane inclination) = 60 degree

alpha(t)=alpha(0)+B*sin(2*pi*f*t + phi)

B (amplitude of rotation) = pi/4 ; alpha(0)= pi/2; f=1; phi(phase delay between translation and rotation = 0.

Kindly help me with this UDF


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