Post on 23-Dec-2015
Numerical simulation of flow past
bodies by vortex method
Alexey Setukha
Lomonosov Moscow State University
September, 2013
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• The idea of a vortex methods
• Mathematical aspects
• The numerical vortex model for the separated flows past bodies
• The tests calculations and examples of Applications
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NUMERICAL SCHEME
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THE PROBLEM
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The tests calculations and
examples of Applications
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MODERN PASSENGER AIRCRAFT MODELING
PERSPECTIVE VIEW
TOP VIEW
SIDE VIEW
AIRCRAFT MAPPING
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MODERN PASSENGER AIRCRAFT MODELING
For angles of attack 0 , 10
For angles of attack 40 ,50 ,60 ,70 ,80
SEPARATION LINES
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MODERN PASSENGER AIRCRAFT MODELING
VORTEX WAKE FOLLOWING AIRCRAFT WHEN 70 .
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MODERN PASSENGER AIRCRAFT MODELING
DISTRIBUTION OF AERODYNAMIC LOAD:
p
p pc
q
at solid fuselage, p
p pc
q
- at wings and fins (thin surfaces), 2 / 2q V .
70
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MODERN PASSENGER AIRCRAFT MODELING
COMPARING CALCULATIONS TO EXPERIMENTAL DATA
-0,8
0
0,8
1,6
2,4
-5 15 35 55 75
Cy
mz
-2,1
-1,4
-0,7
0
0,7
-5 15 35 55 75
NORMAL POWER AND PITCH MOMENT COEFFICIENTS ON VARIOUS ANGLES OF ATTACK
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MODELING FLOWS PAST BUILDINGS AND CONSTRUCTIONS
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MODELING FLOWS PAST BUILDINGS AND CONSTRUCTIONS
VELOCITY FIELD ANALYSIS
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MODELING FLOWS PAST BUILDINGS AND CONSTRUCTIONS
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MODELING FLOWS PAST BUILDINGS AND CONSTRUCTIONS
HOUSE MAPPING. POSITION OF BASE LINE OF PRESSURE COMPARISON.
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MODELING FLOWS PAST BUILDINGS AND CONSTRUCTIONS
THE DISTRIBUTION OF PRESSURE COEFFICIENT OVER HOUSE SURFACE
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MODELING FLOWS PAST BUILDINGS AND CONSTRUCTIONS
THE DISTRIBUTION OF PRESSURE COEFFICIENT IN SECTION A-A
(COMPARISON TO EXPERIMENT).
0 300
line-calculation, points- experiment (K.S. Strelkov, M.S. Komarov, Yu. M. Mulov, Yu.M. Nevezhina Scientific report of NTO STz “TsAGI-TEST” 1998)
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MODELING FLOWS PAST BUILDINGS AND CONSTRUCTIONS
THE DISTRIBUTION OF PRESSURE COEFFICIENT IN SECTION A-A
(COMPARISON TO EXPERIMENT).
0 300
line-calculation, points- experiment (K.S. Strelkov, M.S. Komarov, Yu. M. Mulov, Yu.M. Nevezhina Scientific report of NTO STz “TsAGI-TEST” 1998)
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MODELING PARACHUTES
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MODELING PARACHUTES
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MODELING PARACHUTES
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Parachute Building Institute (Moscow, Russia) Parachute design department (Xianfan, China)