If the Mach number of the airplane is higher than 0.5, it is prudent to correct this value using the compressibility correction of Frankl-Voishel, presented in Equation (8-59). It is of interest to compare Equa
The expressions show that the magnitude of the LDmax is independent of altitude. The CL of LDmax called CLopt, can be determined using the relations below: (20-35)Simplified drag model:CLopt=CDmink (20-36)Adjusted drag model:CLopt=CDmink+CLminD2 (1) Airspeed for LDmax The airspeed at ...
(2.4) It is conventient to choose the constant Uo in Equation (2.3) such that U is zero at the kagrangian point, L2 (see Figure 1). In this case we have for Uo (see Paper I) Uo = 3/2 + 9"h2/2 -- 7"h a + 0(ha), (2.5) where h is the radius of the Hill sphere ...
The expressions of slip lengths on the simple surface pat- terns of Fig. 2 predict that slip length depends proportion- ally on the structural pitch and logarithmically (for grates and holes) or algebraically (for posts) on the gas fraction. As a result, the slip length on posts ...
Substituting this into Eq. (1.103) and equating the result to Eq. (1.102) (i.e., equating the two expressions for the thrust), we get (1.108)12ρS(Vs2−V2)=ρSV0(Vs−V) Dividing this by ρS(Vs−V) and rearranging terms, we get (1.109)V0=12(Vs+V) This shows that...
Expressions for the rotational drags due to fluctuations of the interface at the contact line were also given by Stocco et al. to explain the rotational diffusions of Janus microparticles at the liquid-gas interface [68]. The limitation of this model is the absence of experimental evidence of ...
Among these, one can mention Tomotika and Aoi [3] who analytically studied the creeping flow around a flat plate parallel and perpendicular to the flow direction. They determined the analytical expressions of the drag coefficient, the streamlines and the pressure distribution on the plate. The ...
To simplify your work, linearize all the power-law expressions, i.e., (1−bδ∗/Ao)n≅1−nbδ∗/Ao. d) If the duct area expanded as the flow moved downstream, would the correction for the presence of the sidewall boundary layers be more likely to move boundary-layer ...
In the UK system the temperature is in °R and the viscosity can be found from the following expressions [7]: (16-20)μ=3.170×10-11T1.5(734.7T+216)lbf·s/ft2 In the SI system the temperature is in K and the viscosity can be found from: (16-21)μ=1.458×10-6T1.5(1T+11...
For D<κ12−1, the velocity and force are replaced by the following expressions, respectively: η2V≃γ12(D/κ12−1)6 and F ≃ (η2V/γ12)1/3γ12RTRL/D. We note here that the viscous friction forces including this nonlinear friction and that given in Eq. (15) are ...