An object-oriented approach to the design of fluid mechanics software

Calvin, Christophe; Cueto, O.; Emonot, Philippe

doi:10.1051/m2an:2002038

Cited by 57 publications

(23 citation statements)

References 1 publication

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“…All computations discussed in this paper were done using the TRIO U/PRICELES code developed at CEA Grenoble [25]. This code is mainly intended to deal with LES in thermohydraulics, using structured or unstructured grids under the incompressible or low-Mach number approximations.…”

Section: Methodsmentioning

confidence: 99%

LES of turbulent heat transfer: proper convection numerical schemes for temperature transport

Chatelain¹,

Ducros²,

Métais³

2004

Numerical Methods in Fluids

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SUMMARYLarge eddy simulations of two basic conÿgurations (decay of isotropic turbulence, and the academic plane channel ow) with heat transfer have been performed comparing several convection numerical schemes, in order to discuss their ability to evaluate temperature uctuations properly. Results are compared with the available incompressible heat transfer direct numerical simulation data. It is shown that the use of regularizing schemes (such as high order upwind type schemes) for the temperature transport equation in combination with centered schemes for momentum transport equation gives better results than the use of centred schemes for both equations.

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Section: Methodsmentioning

confidence: 99%

LES of turbulent heat transfer: proper convection numerical schemes for temperature transport

Chatelain¹,

Ducros²,

Métais³

2004

Numerical Methods in Fluids

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“…A third order QUICK scheme (quadratic upstream interpolation for convective kinetics [32]) is used for temperature convection. TrioCFD is used to perform the simulations [33].…”

Section: Numerical Set Upmentioning

confidence: 99%

Spectral analysis of turbulence in anisothermal channel flows

et al. 2017

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Highlights • Direct numerical and large eddy simulations of very anisothermal flows • Spectral analysis of turbulence • Study of the thermal gradient effect by comparison with isothermal simulations • Study of two turbulent Reynolds numbers 180 and 395 Abstract In very anisothermal turbulent flows, the temperature gradient and turbulence are strongly coupled. The impact of the temperature gradient on turbulent kinetic energy (TKE) balance terms is of particular importance. It is investigated using direct numerical simulations and large eddy simulations of a fully developed anisothermal channel flow. A low Mach flow at two turbulent Reynolds number (180 and 395) is considered. The temperatures of the two channel walls are 293 K and 586 K. Comparison with isothermal channel flows are carried out.The turbulent kinetic energy spectral evolution equation is established and is decomposed into the three distinctive mechanisms: production, nonlinear transfer and viscous effects. The decomposition isolates the terms that vanish in the isothermal case, namely purely anisothermal effects. The behavior of each term is first discussed in the isothermal case. The alteration of the TKE balance terms with the temperature gradient is then analysed relatively to the Reynolds number variation. The thermal gradient effect is characterized by the combined effect of local Reynolds number variation and the complex interaction between temperature and turbulence. The purely anisothermal contribution moves the energy from the hot side to the cold side and accounts for near 10% of the total $ This work is dedicated to Dr. Chuck Leith in respectful acknowledgement of his exemplary scientific career.

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“…Simulations are performed using the Trio_U code (Calvin et al, 2002;Mathieu et al, 2003;www-trio-u.cea.fr) developed at the Commissariat a l'É nergie Atomique (CEA) and the accuracy of which has been demonstrated (Benarafa et al, 2006;Labourasse et al, 2007). Eqs.…”

Section: Flow Solvermentioning

confidence: 99%