{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Prelim_2_problem_1

Prelim_2_problem_1 - Prelim 2 Problem 1 Given Hot...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Prelim 2, Problem 1 Given: Hot combustion products flowing at 80 m/s enter a nozzle at 260 kPa and1050 K and leave at 10 kPa. Find: Exit velocity of the nozzle Assumptions: - model gas as air with constant specific heats - neglect change in potential energy T 1 = 1050K p 2 = 10kPa p 1 = 260kPa V 1 = 80m/s V 2 = ? m/s c p = 1.000kJ/kgK k = 1.4 R = 0.287kJ/kgK Analysis: First, apply energy conservation to control volkume, neglecting change in potential energy, ( ) 2 2 1 2 1 2 2 1 2 1 2 2 2 1 2 1 0 2 2 2 2 2 CV CV p V V m h m h Q W V V h h V c T T V = + + + = + = + ± ± ± ± 0 0 For isentropic process with constant specific heats,
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Background image of page 2
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}