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Drag and lift calculation through a spatial impulsive surface interaction model in free molecule flow

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Sommario

Nel presente lavoro viene applicato un modello spaziale impulsivo di interazione superficiale[1] al calcolo dei coefficienti di resistenza e portanza per lamina piana, sfera e cilindro con deriva in regime di molecole libere con velocità ipertermiche. I risultati ottenuti per la lamina piana vengono confrontati con i corrispondenti coefficienti calcolati teoricamente da Hurlbut e Sherman nel1968 [3].

Summary

A spatial impulsive interaction model is applied to the calculation of drag and lift coefficients for flat plate, sphere and circular cylinder with side-wind in “hyperthermal” free-molecule flow. Obtained results for flat plate are also compared with the corresponding coefficients calculated by Hurlbut and Sherman in1968 according to the Nocilla reemission model(1962).

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References

  1. M. G. Chiadò Piat andR. Riganti,A spatial impulsive surface interaction model, (in course of elaboration).

  2. S. Nocilla andM. G. Chiadò Piat,Studies on the behaviour of gas molecules scattered by a solid surface: normal incidence, 6th R.G.D. Symposium, Vol. II, p. 1069, Academic Press, New York, 1969.

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  3. Hurlbut andSherman,Application of the Nocilla wall reflection model to free molecule kinetic theory, Physics of fluids, Vol. 11, no. 3, 1968.

  4. S. Nocilla,The surface re-emission law in free molecule flow, 3rd R.G.D. Symposium, p. 327, Academic Press, New York, 1963.

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  5. M. G. Chiadò Piat,Studies on the behaviour of gas molecules scattered by a solid surface: analysis for monoenergetic beams, Entropie, no. 30, 1969.

  6. J. P. Moran, AFOSR 68-0319, MIT Fluid Dynamics Research, Laboratory Report T68-1, 1968.

  7. R. M. Logan andR. E. Stickney, Jour. Chem. Phys.44, p. 195, 1966.

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Authors and Affiliations

  1. Istituto di Meccanica Razionale, Politecnico di Torino, Italy

    Riccardo Riganti & Maria Grazia Chicado' Piat

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  1. Riccardo Riganti
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  2. Maria Grazia Chicado' Piat
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Riganti, R., Chicado' Piat, M.G. Drag and lift calculation through a spatial impulsive surface interaction model in free molecule flow. Meccanica 6, 132–138 (1971). https://doi.org/10.1007/BF02128328

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  • DOI: https://doi.org/10.1007/BF02128328

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