Ansys中生热率加载在面上的含义具体是什么啊？

34295134

生热率heat generat是体载荷，单位是w/m3，ansys中可以将它施加在面上和体上，那么施加在面上的含义是什么呢？求解答

bqc

From Help u could find,
2.5.2.5. Heat Generation Rates (HGEN)
You apply heat generation rates as "body loads" to represent heat generated within an element, for example by a chemical reaction or an electric current. Heat generation rates have units of heat flow rate per unit volume.
and,
Table 2.10  Load Commands for a Thermal Analysis
Heat Generation Rate Solid Model Keypoints BFK BFKDELE BFKLIST BFTRAN -
" Solid Model Lines BFL BFLDELE BFLLIST BFTRAN -
" Solid Model Areas BFA BFADELE BFALIST BFTRAN -
" Solid Model Volumes BFV BFVDELE BFVLIST BFTRAN
So,
even ansys中可以将它施加在面上和体上, it is still a body load rather than a surface load.
To apply hgen, we can use commands bf, bfe, bfa, etc.
Check here http://forum.simwe.com/thread-473823-1-1.html
Solution 6428:
==============
How are heat generation rates (HGEN) applied via BF versus BFE?
===============================================================
Q:  How are heat generation rates (HGEN) applied via the BF command
    versus the BFE command?
A:  If you specify a heat generation with the BF command, ANSYS will
    multiply that value by the weighted nodal volume of each element
    that touches that node.  However, if the BFE command is used, the
    specified value will be taken "as is" for the given elements.  
    Therefore, the BFE command is easier to work with.