"9721524"^^ . "In fluid dynamics, the Cunningham correction factor or Cunningham slip correction factor is used to account for noncontinuum effects when calculating the drag on small particles. The derivation of Stokes' law, which is used to calculate the drag force on small particles, assumes a no-slip condition which is no longer correct at high Knudsen number. The Cunningham slip correction factor allows predicting the drag force on a particle moving a fluid with Knudsen number between the continuum regime and free molecular flow. The drag coefficient calculated with standard correlations is divided by the Cunningham correction factor, C given below. Ebenezer Cunningham derived the correction factor in 1910 and with Robert Andrews Millikan, verified the correction in the same year. where C is the correction factor\u03BB is the mean free pathd is the particle diameterAn are experimentally determined coefficients.For air (Davies, 1945):A1 = 1.257A2 = 0.400A3 = 0.55 The Cunningham correction factor becomes significant when particles become smaller than 15 micrometers, for air at ambient conditions. For sub-micrometer particles, Brownian motion must be taken into account."@en . . . "1123376872"^^ . . . . . . . . . "Fator de corre\u00E7\u00E3o de Cunningham"@pt . . "En la din\u00E0mica de fluids, el factor de correcci\u00F3 de Cunningham o factor de correcci\u00F3 de lliscament de Cunningham s'utilitza per tenir en compte els efectes no-continus en el c\u00E0lcul del fregament en petites part\u00EDcules. La derivaci\u00F3 de la llei de Stokes, que s'utilitza per calcular la for\u00E7a de fregament en petites part\u00EDcules, assumeix una condici\u00F3 de no lliscament que, per un nombre de Knudsen elevat, no \u00E9s correcta. El factor de correcci\u00F3 de Cunningham permet la predicci\u00F3 de la for\u00E7a de fregament sobre una part\u00EDcula que es mou en un fluid amb un nombre de Knudsen entre el i el flux molecular lliure."@ca . . . . . . . . . "Cunningham correction factor"@en . . . "O fato de corre\u00E7\u00E3o de Cunningham \u00E9 uma corre\u00E7\u00E3o no coeficiente de arrasto utilizado para prever a for\u00E7a de arrasto entre um fluido e uma part\u00EDcula se movendo nesse fluido. Ebenezer Cunningham derivou este fator de corre\u00E7\u00E3o em 1910. Tal corre\u00E7\u00E3o foi utilizada no experimento da gota da \u00F3leo de Robert Andrews Millikan para determina\u00E7\u00E3o da carga do el\u00E9tron, realizada no mesmo ano. O fator de corre\u00E7\u00E3o de Cunningham \u00E9 dado pela express\u00E3o onde"@pt . "O fato de corre\u00E7\u00E3o de Cunningham \u00E9 uma corre\u00E7\u00E3o no coeficiente de arrasto utilizado para prever a for\u00E7a de arrasto entre um fluido e uma part\u00EDcula se movendo nesse fluido. Ebenezer Cunningham derivou este fator de corre\u00E7\u00E3o em 1910. Tal corre\u00E7\u00E3o foi utilizada no experimento da gota da \u00F3leo de Robert Andrews Millikan para determina\u00E7\u00E3o da carga do el\u00E9tron, realizada no mesmo ano. O fator de corre\u00E7\u00E3o de Cunningham \u00E9 dado pela express\u00E3o onde C \u00E9 o fator de corre\u00E7\u00E3o\u03BB \u00E9 o caminho livre m\u00E9diod \u00E9 o di\u00E2metro da part\u00EDculaAn s\u00E3o coeficientes determinados experimentalmente.Para o ar (Davies, 1945):A1 = 1,257A2 = 0,400A3 = 0,55 O coeficiente de arrasto calculado com correla\u00E7\u00F5es padr\u00E3o \u00E9 divido pelo fator de correla\u00E7\u00E3o de Cunningham, C, para levar em conta o fato de que o fluido, em rela\u00E7\u00E3o a part\u00EDcula, n\u00E3o pode ser considerado como cont\u00EDnuo quando as part\u00EDcula \u00E9 demasiadamente pequena. O fator de Cunningham, por exemplo, torna-se significante para part\u00EDculas com menos de 15 micr\u00F4metros de di\u00E2metro suspensas no ar em condi\u00E7\u00F5es ambientes."@pt . . . . . "Factor de correcci\u00F3 de Cunningham"@ca . . "In fluid dynamics, the Cunningham correction factor or Cunningham slip correction factor is used to account for noncontinuum effects when calculating the drag on small particles. The derivation of Stokes' law, which is used to calculate the drag force on small particles, assumes a no-slip condition which is no longer correct at high Knudsen number. The Cunningham slip correction factor allows predicting the drag force on a particle moving a fluid with Knudsen number between the continuum regime and free molecular flow. where"@en . . . "1994"^^ . . . . . "En la din\u00E0mica de fluids, el factor de correcci\u00F3 de Cunningham o factor de correcci\u00F3 de lliscament de Cunningham s'utilitza per tenir en compte els efectes no-continus en el c\u00E0lcul del fregament en petites part\u00EDcules. La derivaci\u00F3 de la llei de Stokes, que s'utilitza per calcular la for\u00E7a de fregament en petites part\u00EDcules, assumeix una condici\u00F3 de no lliscament que, per un nombre de Knudsen elevat, no \u00E9s correcta. El factor de correcci\u00F3 de Cunningham permet la predicci\u00F3 de la for\u00E7a de fregament sobre una part\u00EDcula que es mou en un fluid amb un nombre de Knudsen entre el i el flux molecular lliure. Ebenezer Cunningham va derivar el factor de correcci\u00F3 el 1910 i el va verificar juntament amb Robert Andrews Millikan el mateix any. \u00C9s el seg\u00FCent: on C \u00E9s el factor de correcci\u00F3\u03BB \u00E9s el d \u00E9s el di\u00E0metre de la part\u00EDculaAn s\u00F3n coeficients determinats experimentalmentPer l'aire (Davies, 1945):A1 = 1.257A\u2082 = 0.400A\u2083 = 0.55 El factor de correcci\u00F3 de Cunningham esdev\u00E9 significant quan les part\u00EDcules s\u00F3n m\u00E9s petites de 15 micr\u00F2metres, per l'aire a temperatura ambient.Per part\u00EDcules m\u00E9s petites s'ha de tenir en compte el moviment Browni\u00E0."@ca . . .