The formation and evolution of stratification during transient mixing ventilation

Journal of Fluid Mechanics

Volumn 670, Issue , 2011, Pages 66-84

  Kuesters, Andrea S ^a   Woods, Andrew W ^a  

^a UNIVERSITY OF CAMBRIDGE   (United Kingdom)

Author keywords

Plumes thermals

Indexed keywords

LABORATORIES; MIXING; VENTILATION;

DENSITY STRATIFICATION; FORMATION AND EVOLUTIONS; INITIAL DEVELOPMENT; LABORATORY EXPERIMENTS; PLUMES/THERMALS; TURBULENT BUOYANT PLUME; VERTICAL STRATIFICATION; VERTICAL STRUCTURES;

BUOYANCY;

BUOYANCY; COMPUTER SIMULATION; FLUID DYNAMICS; FLUID FLOW; FLUID MECHANICS; FORMATION MECHANISM; MIXING RATIO; NUMERICAL MODEL; PLUME; STRATIFICATION; THERMAL CONVECTION; TRANSIENT FLOW; VENTILATION;

EID: 79952775509     PISSN: 00221120     EISSN: 14697645     Source Type: Journal    
DOI: 10.1017/S0022112010005392     Document Type: Article

References (28)

1. Baines, W. & Turner, J. 1969 Turbulent buoyant convection from a source in a confined region. J. Fluid Mech. 37 (1), 51-80.
2. Bolster, D. T. & Linden, P. F. 2007 Contaminants in ventilated filling boxed. J. Fluid Mech. 591, 97-116.
3. Bolster, D. T., Maillard, A. & Linden, P. 2008 The response of natural displacement ventilation to time-varying heat sources. Energy Build. 40, 2099-2110.
4. Boulard, T. & Baille, A. 1995 Modeling of air exchange rate in a greenhouse equipped with continuous roof vents. J. Agric. Engng Res. 61, 37-48.
5. Bower, D. J., Caulfield, C. P., Fitzgerald, S. D. & Woods, A. W. 2008 Transient ventilation dynamics following a change in strength of a point source of heat. J. Fluid Mech. 614, 15-37.
6. Caulfield, C. P. & Woods, A. W. 1998 Turbulent gravitational convection from a point source in a non-uniformly stratified environment. J. Fluid Mech. 360, 229-248. (Pubitemid 128488587)
7. Caulfield, C. P. & Woods, A. W. 2002 The mixing in a room by a localized finite-mass-flux source of buoyancy. J. Fluid Mech. 471, 33-50. (Pubitemid 35431916)
8. Chenvidyakarn, T. & Woods, A. W. 2005 Multiple steady states in stack ventilation. Build. Environ. 40, 399-410. (Pubitemid 40077473)
9. Chiu, Y.-H. & Etheridge, D. W. 2004 Experimental technique to determine unsteady flow in natural ventilation stacks at model scale. J. Wind Engng Ind. Aerodyn. 92, 291-313. (Pubitemid 38301104)
10. Fitzgerald, S. D. & Woods, A. W. 2007 On the transition from displacement to mixing ventilation with a localised heat source. Build. Environ. 42 (6), 2210-2217. (Pubitemid 46296609)
11. Fitzgerald, S. D. & Woods, A. W. 2008 The influence of stacks on flow patterns and stratification associated with natural ventilation. Build. Environ. 43, 1719-1733. (Pubitemid 351899431)
12. Flynn, M. R. & Caulfield, C. P. 2006 Natural ventilation in interconnected chambers. J. Fluid Mech. 564, 139-158. (Pubitemid 44419996)
13. Germeles, A. E. 1975 Forced plumes and mixing of liquids in tanks. J. Fluid Mech. 71, 601-623.
14. Gladstone, L. & Woods, A. W. 2001 On buoyancy-driven natural ventilation of a room with a heated floor. J. Fluid Mech. 441, 293-314. (Pubitemid 32779148)
15. Hunt, G. R. & Kaye, N. G. 2001 Virtual origin correction for lazy plumes. J. Fluid Mech. 435, 377-396. (Pubitemid 32526787)
16. Kaye, N. G. & Hunt, G. R. 2004 Time-dependent flows in an emptying filling box. J. Fluid Mech. 520, 135-156. (Pubitemid 40107033)
17. Kenton, A. G., Fitzgerald, S. & Woods, A. W. 2004 Theory and practice of natural ventilation in a theatre. Proc. PLEA 2004, Eindhoven.
18. Linden, P. 1999 The fluid mechanics of natural ventilation. Annu. Rev. Fluid Mech. 31, 201-238. (Pubitemid 36175094)
19. Linden, P. F. & Cooper, P. 1996 Multiple sources of buoyancy in a naturally ventilated enclosure. J. Fluid Mech. 311, 177-192. (Pubitemid 126477852)
20. Linden, P., Lane-Serff, G. & Smeed, D. 1990 Emptying filling boxes: the fluid mechanics of natural ventilation. J. Fluid Mech. 212, 309-335.
21. Liu, P.-C., Lin, H.-T. & Chou, J.-H. 2009 Evaluation of buoyancy-driven ventilation in atrium buildings using computational fluid dynamics and reduced-scale air model. Build. Environ. 44, 1970-1979.
22. Livermore, B. & Woods, A. W. 2006 Natural ventilation of multiple storey buildings: the use of stacks for secondary ventilation. Build. Environ. 41 (10), 1339-1351. (Pubitemid 43785808)
23. Merci, B. & Maele, K. V. 2008 Numerical simulations of full-scale enclosure fires in a small compartment with natural roof ventilation. Fire Saf. J. 43, 495-511.
24. Morton, B., Taylor, G. & Turner, J. 1956 Turbulent gravitational convection from maintained and instantaneous sources. Proc. R. Soc. Lond. Ser. A 234 (1196), 1-23.
25. Pawlak, G. & Armi, L. 2000 Mixing and entrainment in developing stratified currents. J. Fluid Mech. 424, 45-73. (Pubitemid 32003837)
26. Turner, J. S. 1979 Buoyancy Effects in Fluids. Cambridge University Press.
27. Wells, M. G. & Wettlaufer, J. S. 2007 The long-term circulation driven by density currents in a two-layer stratified basin. J. Fluid Mech. 572, 37-58.
28. Woods, A. W., Fitzgerald, S. D. & Livermore, S. 2009 A comparison of winter preheating requirements for natural displacement and natural mixing ventilation. Energy Build. 41 (12), 1306-1312.