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• Best practice guidelines for turbomachinery CFD
  ...osity ratio describes how large the turbulence viscosity is related to the molecular viscosity. In turbomachinery the eddy viscosity ratio can vary from say 10 ...tion. Most transitions in turbomachinery are by-pass transitions caused by free-stream turbulence and other external disturbances like wakes, vortices and
  41 KB (6,252 words) - 08:46, 4 March 2023
• Reynolds averaged equations
  In equation 2.1, the subscript i is a free index which can take on the values 1,2 and 3. Thus equation 2.1 is in reali ...ch larger than the molecular length and time scales which characterize the molecular interactions that are actually causing the momentum transfer. (This is what
  17 KB (2,883 words) - 22:16, 14 May 2006
• Incompressible flow
  ... <math>U<<\frac{Lc}{\lambda}</math> (<math>\lambda</math> is the molecular free path) holds naturally for the continuous medium. .... <math>\pi^S</math> and <math>\pi^I</math> are the solenoidal (divergence-free) and irrotational projection operators.
  8 KB (1,427 words) - 18:57, 19 August 2013
• Combustion
  The reaction rate is also naturally proportional to the molecular density of each of the reactant. Nonetheless, the orders of reaction <math> ... ''isobaric'' approximation) and the flow is assumed close to a divergence-free state.
  156 KB (25,897 words) - 22:14, 17 March 2011
• Flow regimes
  <tr><td>[[Free Molecular]]</td><td> > 10</td></tr>
  414 B (63 words) - 04:14, 21 September 2005
• Heat transfer
  ...he material as a whole. In this mode of heat transfer, heat flow is due to molecular collisions in the substance. Since molecullar collisions increase with temp 1) Natural or Free Convection
  6 KB (990 words) - 03:23, 17 February 2009
• Introduction to turbulence/Reynolds averaged equations
  In equation 1, the subscript <math>i</math> is a free index which can take on the values 1,2 and 3. Thus equation 1 is in reality ...ch larger than the molecular length and time scales which characterize the molecular interactions that are actually causing the momentum transfer. (This is what
  45 KB (7,578 words) - 08:35, 21 August 2013
• Non-equilibrium Flow
  ...n correction ); the extension of the Enskog-Chapman perturbation method to molecular gases, however, already shows that, beyond these modifications, new phenome ... state of a gas flow changes drastically. Some examples of such flows are: free jet flows with very high stagnation to ambient pressure ratio, a gas in the
  3 KB (451 words) - 09:15, 3 January 2012
• What is Open Source?
  Another area where open source and literally 'free' applications are very useful is for students with no access to commercial ...ot always the case). Some of the OpenSource software that is available for free is restricted to personal-use; you are not allowed to use it in your commer
  28 KB (4,443 words) - 05:05, 23 December 2017
• CONVERGE FAQ
  ... multi-component surrogates whose properties (e.g., derived cetane number, molecular weight, H/C ratio) approximate those of the target fuel. ...E, the HTC is a local value based on the near-wall cell temperature, not a free-stream temperature. This HTC differs from an HTC that is based on a user-sp
  85 KB (13,492 words) - 15:51, 10 August 2020