Air High-Enthalpy Stagnation Point Heat Flux Calculation

Filippis, F. De; Serpico, M.

doi:10.2514/2.6386

Cited by 13 publications

(9 citation statements)

References 11 publications

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“…The similarity of results of the formula for an equilibrium boundary layer [equation (4)] and results of the formula for a frozen boundary layer with a fully catalytic wall [equation (5)] is confirmed by the numerical Fig. 4 Normalized heat fluxes versus enthalpy potential investigation by De Filippis [5]. The agreement of these formulae both with numerical results [equation (7)] and with experimental data obtained by Rose and Stark and by Yee is fairly good.…”

Section: Analysis Of Resultssupporting

confidence: 83%

“…De Filippis [4] computed numerical results with a Navier± Stokes code (H2SN) in the range 2 < h 0I < 39 MJ=kg. De Filippis [5] processed the results and obtained the correlation formula _ q N 90(h 0I À h w ) 1:17 (7) which can be used, in all engineering applications, to predict fully catalytic wall heat flux in all gaseous states. Experimental data in the literature were obtained from arc-driven shock tubes and from a ballistic range.…”

Section: Analysis Of Resultsmentioning

confidence: 99%

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Recasting the Fay-Riddell formulae for computing the stagnation point heat flux

Zuppardi

Espósito

2000

Proceedings of the Institution of Mechanical Engineers, Part G:

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The Fay±Riddell formulae, used to compute the heat flux at the stagnation point of spherical bodies in very high speed, laminar flow and dissociating air, have been revived and recast. As these formulae were obtained by fitting a number of results of the original Fay±Riddell computing procedure, which suffered from inaccuracies concerning operative parameters, it is to be expected that these inaccuracies also influence the correctness of the formulae. A sensitivity analysis has been made in order to identify the most critical parameter. Recast formulae have been calibrated using the results of the improved version of the Fay±Riddell computing procedure and then validated both by numerical results of a Navier±Stokes code and by experimental data. For this purpose two sets of heat flux measurements have been made in HEBDAF (high enthalpy blown-down arc facility) at the University of Naples, matching the operating conditions of the formula for a frozen boundary layer and non-catalytic wall. Recast formulae are valid in the range of free-stream total enthalpy between 3 and 37 MJ=kg.

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Section: Analysis Of Resultssupporting

confidence: 83%

Section: Analysis Of Resultsmentioning

confidence: 99%

Recasting the Fay-Riddell formulae for computing the stagnation point heat flux

Zuppardi

Espósito

2000

Proceedings of the Institution of Mechanical Engineers, Part G:

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“…Their equation is given in Where K is a constant based on the gas composition. Another expression was computed by Filippis in order to extend the predictive range of the theory from a maximum flow enthalpy of 23 MJ/kg to 39 MJ/kg [48]. This is shown in Equation 13.…”

Section: Equilibrium Boundary Layermentioning

confidence: 99%

Yip-08 Hypervelocity Boundary Layer Studies for Axisymmetric Engine Flowpaths

Austin¹,

Flaherty²

2011

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“…Two reduced expressions to calculate four at the stagnation point of a sphere were derived by Sutton and Graves [28], Eq. (1), and Filippis and Serpico [29], Eq. (2).…”

Section: Methodsmentioning

confidence: 99%