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July 18, 2005, 04:03 |
Ultra high temperature?
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#1 |
Guest
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I am using sorsca.f and sorent.f to consider of scalar genetraion due to high temperature( more than 1.0e6K) with the option-multi component specific heat, viscosity etc... But Looking at star.info, I found the follwing message;
|----------------------------------| | DOMAIN: star_0001 | |----------------------------------| TIME STEP = 4; ELAPSED TIME = 0.800000E-10 s; TABLE/USER CODING --------------------------------------------------------------------- *** WARNING #090 *** VALUE ELOG*YPLUS OR ELOG*EFFVIS/(CAPPA*VISCOS) IS LESS THAN 1.1 AT 100 CELLS. UPLUS=YPLUS LAW IS USED. IF THIS SITUATION PERSISTS, INCORRECT RESULTS MAY BE OBTAINED. *** WARNING #090 *** VALUE ELOG*YPLUS OR ELOG*EFFVIS/(CAPPA*VISCOS) IS LESS THAN 1.1 AT 100 CELLS. UPLUS=YPLUS LAW IS USED. IF THIS SITUATION PERSISTS, INCORRECT RESULTS MAY BE OBTAINED. MAXIMUM COURANT NUMBER = 1.154E-03 AT CELL 7900 MEAN COURANT NUMBER = 1.130E-04 *** WARNING #007*** SETTING T AT CELL 7501 FROM 8.285E+04 TO 2.000E+04 *** WARNING #007*** SETTING T AT CELL 7502 FROM 5.168E+04 TO 2.000E+04 *** WARNING #007*** SETTING T AT CELL 7503 FROM 3.122E+04 TO 2.000E+04 *** WARNING #007*** SETTING T AT CELL 7701 FROM 8.296E+04 TO 2.000E+04 *** WARNING #007*** SETTING T AT CELL 7702 FROM 5.175E+04 TO 2.000E+04 *** WARNING #007*** SETTING T AT CELL 7703 FROM 3.126E+04 TO 2.000E+04 *** WARNING #007*** SETTING T AT CELL 7901 FROM 8.296E+04 TO 2.000E+04 *** WARNING #007*** SETTING T AT CELL 7902 FROM 5.175E+04 TO 2.000E+04 *** WARNING #007*** SETTING T AT CELL 7903 FROM 3.126E+04 TO 2.000E+04 *** WARNING #007*** SETTING T AT CELL 8101 FROM 8.296E+04 TO 2.000E+04 *** WARNING #007*** SETTING T AT CELL 8102 FROM 5.175E+04 TO 2.000E+04 *** WARNING #007*** SETTING T AT CELL 8103 FROM 3.126E+04 TO 2.000E+04 *** WARNING #007*** SETTING T AT CELL 8301 FROM 8.296E+04 TO 2.000E+04 *** WARNING #007*** SETTING T AT CELL 8302 FROM 5.175E+04 TO 2.000E+04 *** WARNING #007*** SETTING T AT CELL 8303 FROM 3.126E+04 TO 2.000E+04 *** WARNING #007*** SETTING T AT CELL 8501 FROM 8.285E+04 TO 2.000E+04 *** WARNING #007*** SETTING T AT CELL 8502 FROM 5.168E+04 TO 2.000E+04 *** WARNING #007*** SETTING T AT CELL 8503 FROM 3.122E+04 TO 2.000E+04 Why do these message occurs???????????? My calcualtion informations are - compressible flow - turbuletnt option ON - Courant number is satisfied during simulation - Scalars are ION, ELE, and theses scalars are "active" |
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July 18, 2005, 07:44 |
Re: Ultra high temperature?
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#2 |
Guest
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You have hit the maximum T limit setting internally in STAR-CD, use Real-Constant 90 to change the set (in Nav-Center, Analysis Controls=>Other Controls=>Switches and Real Constants. After setting R90, write the probe file again (prob).
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July 19, 2005, 01:01 |
Re: Ultra high temperature?
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#3 |
Guest
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Thank you John. I solved my problem about warning message in *.info file. Hmm... How do you know that the R90 means the maximu T limit? And Do you know the meanings of the others Real-Constants?
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