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How can I get the area of a cell?

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Old   October 21, 2002, 05:22
Default How can I get the area of a cell?
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cloudz
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I want to calculate the airflow between zones. So the velocity and current cell area are need to know,how can I get it? thanks.
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Old   October 21, 2002, 10:45
Default Re: How can I get the area of a cell?
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Eugene
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Try http://htex.mpei.ac.ru/~krinitsky/index1.html software. Load PHI file, enter to analyze mode and click mouse button on cell and you see velocity value and X,Y,Z cell size.
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Old   October 22, 2002, 09:09
Default Re: How can I get the area of a cell?
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cloudz
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i mean,i want to calculate the airflow in ground.for. so i wonder whether there are any symbol used to represent the area of current cell(or the x,y,z extent of current cell)?
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Old   October 22, 2002, 10:58
Default Re: How can I get the area of a cell?
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Rami
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Hi cloudz,

If you wish to access the EAST face (say) of all cells -

get the 0-location index by

l0a = L0B(ASURFE)

loop on the range of indices (e.g., ix1<= ix <=ix2, etc.), and retrieve the area fro the F array by:

do izz = iz1,iz2

jz = Nx*Ny*(izz-1)

do ix = ix1,ix2

do iy = iy1,iy2

icell = iy + Ny*(ix-1)

area = F(l0a + icell + jz)

enddo ! iy

enddo ! ix

enddo ! izz

Note, that part of the above variables (e.g., Nx, Ny etc.) are passed in commons included in some of d_includ/ folder.

I hope this helps. Rami

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Old   October 23, 2002, 09:55
Default Re: How can I get the area of a cell?
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cloudz
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Rami,thank you very much. Can you explain more detailedly,what's the function L0B(ASURFE) meaning? I've looked for the polis,but just find the L0F(variable name) function subroutine.
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Old   October 23, 2002, 10:12
Default Re: How can I get the area of a cell?
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Rami
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See explanation in POLIS encyclopaedia, entry F-ARRAY of EARTH, (k) Block-location Indices (LB's); BFC Geometrical Quantities, file:/phoenics/d_polis/d_enc/enc_fa11.htm
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