Properties

The fluid properties required for fluid flow and heat transfer analysis are listed in the following table.

A set of consistent units for cm and inches is shown. Other units may be used by making the appropriate conversions.

Note for inches, the values are obtained by dividing common table values of these properties by the conversion factor, gc and converting feet to inches, where gc is also defined in the table.

Symbol	Description	Units - cm	Units - inch
Cp	constant pressure specific heat	Joule/gram-K	Btu-inch/lbf-sec2-R
gc	conversion factor	1.0 gram-cm/sec2-dyne	386.4 lbm-inch/lbf-sec2
k	thermal conductivity	Watt/cm-K	Btu/sec-inch-R
	compressibility (ratio of specific heats for gases and bulk modulus for liquid)	dynes/cm2 (for bulk modulus)	psi (for bulk modulus)
	absolute viscosity	gram/cm-sec	lbf-sec/inch2
	density	gram/cm3	lbf-sec2/inch4
	emissivity (surface property only)
r	wall roughness (surface property only)	cm	in
D	diffusivity	cm2/s	in2/s