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yyinyuan

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[交流] 【求助】什么叫体积黏度呀

什么叫体积黏度呀
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leejane_ren

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yyinyuan(金币+1,VIP+0):谢谢 9-5 22:58
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3楼2009-09-05 09:43:37
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leejane_ren

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yyinyuan(金币+1,VIP+0):谢谢 9-5 22:58
A quantity z which enters into equations at any point where the flow
involves a change in volume, i.e. is dilatational. If the deformation is purely
dilatational, the average of three normal stress components is:
s = (1¤3)(sxx + syy + szz)
= -p + z( ¶vx ¤ ¶x + ¶vy ¤ ¶y + ¶vz ¤ ¶z )
where p is the hydrostatic pressure at the point considered in the absence
of motion.

IUPAC Compendium
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2楼2009-09-05 09:43:12
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