calculation program, fluidynamics
02-23-2007 | 01:16 PM
#1
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From: capetownwestern cape, SOUTH AFRICA
calculation program, fluidynamics
anybody know of a free program which can be used to calculate what type of wing would be needed for a hydrofoil (boat)
02-26-2007 | 08:25 PM
#2
RE: calculation program, fluidynamics
Wing sections in water work a lot different from air wing sections. I'm moving this to the boat forum where you should be able to get a better answer.
02-26-2007 | 10:19 PM
#3
RE: calculation program, fluidynamics
[&:]
Hydrofoil surface area Formula
You need to estimate the area needed, so get out your calculator. The formula is:
S = L / F U² Cl
S = Surface area in Square feet
L = Lift (this is the total weight of your boat, crew, etc., in Pounds)
/ = "divided by"
F = Factor to adjust for water density, unit measurements, etc. Use the number F = 2.09
U^2 = Velocity in MPH multiplied by itself (squared)
Cl = Coefficient of lift. See the table provided below for Cl. You should cruise at a high L / D or say 2.25degrees.
Take off will be at a higher Cl & lower speed. You must make some assumptions based on experience.
[&:]
[edlt]
oops forgot the table....
Hydrofoil surface area Formula
You need to estimate the area needed, so get out your calculator. The formula is:
S = L / F U² Cl
S = Surface area in Square feet
L = Lift (this is the total weight of your boat, crew, etc., in Pounds)
/ = "divided by"
F = Factor to adjust for water density, unit measurements, etc. Use the number F = 2.09
U^2 = Velocity in MPH multiplied by itself (squared)
Cl = Coefficient of lift. See the table provided below for Cl. You should cruise at a high L / D or say 2.25degrees.
Take off will be at a higher Cl & lower speed. You must make some assumptions based on experience.
[&:]
[edlt]
oops forgot the table....
