Question

In: Mechanical Engineering

A shock wave in air exists in a de Laval nozzle where the cross-sectional area is...

A shock wave in air exists in a de Laval nozzle where the cross-sectional area is 130 cm².The inlet Mach number, area and static pressure are 0.35, 210 cm² and 350 kPa. The exit area of the nozzle is 135 cm². Find:

The back pressure for this shock wave to occur

Expert Solution

Solution:

Inlet mach number

Inlet area

Inlet pressure

From isentropic tables:

Area where normal shock occurs

From isentropic tables, at

From normal shock tables at

The back pressure to this shock wave to occur =?

Exit area

From isentropic tables at

The back pressure to the shock wave to occur is

samet mamat answered 2 years ago

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