L

length, m (ft)

L*

characteristic chamber length, m (ft)

m

mass, kg

rii mass flow rate, kg/sec (lb/sec)

Pr Prandtl number (cpfi/K)

q heat-transfer rate or heat flow per unit area, J/m2-sec (Btu/ft2-sec)

Q volume flow rate, m3/sec (ft3/sec), or heat flow rate, J/sec r flow mixture ratio (oxidizer to fuel)

t time, sec ts stay time, sec tw wall thickness, m (in.)

T absolute temperature, K (R)

V specific volume, m3/kg(ft3/lb)

Vc combustion chamber volume (volume up to throat), m3 (ft3)

Greek Letters

Yo angle between chamber axis and oxidizer stream

Yf angle between chamber axis and fuel stream

A finite differential

S angle between chamber axis and the resultant stream e nozzle area ratio (e = A2/At), or emissivity of radiating body

9 angle k thermal conductivity, J/(m2-sec-K)/m (Btu/in.2-sec2- R/in.)

A. coefficient of thermal expansion, m/m-K (in./in.-R)

fj. viscosity, m2/sec v Poisson ratio p density, kg/m3 (lbf/ft3)

a Stefan-Boltzmann constant (5.67 x 10"8 W/m2-K4) Subscripts am arithmetic mean c chamber

/ fuel or final condition g gas

I liquid o oxidizer t throat w wall wg wall on side of gas wl wall on side of liquid

0 initial condition

1 inlet or chamber condition

2 nozzle exit condition

3 atmosphere or ambient condition

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Project Management Made Easy

Project Management Made Easy

What you need to know about… Project Management Made Easy! Project management consists of more than just a large building project and can encompass small projects as well. No matter what the size of your project, you need to have some sort of project management. How you manage your project has everything to do with its outcome.

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