University of Minnesota
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Opere di University of Minnesota
20th century master drawings 4 copie
Walter Quirt, a retrospective : January 18-February 29, 1980, University Gallery, University of Minnesota, Minneapolis. (1979) 2 copie
The Eighteenth Century Drawings 1 copia
The University of Minnesota Bulletin, Vol. 11: The Bulletin of General Information, 1908-1909 (Classic Reprint) (2017) 1 copia
Local labor market research : a case study, the St. Paul project of the Employment Stabilization Research Institute,… (1948) 1 copia
Rural school agriculture 1 copia
The Kerlan collection 1 copia
The Gopher class of 1915 1 copia
Bulletin, Vol. 3: July 1, 1900; The Department of Agriculture: College of Agriculture, School of Agriculture, Dairy… (2017) 1 copia
Intrauterine Contraception in the U.S. - A Current Perspective / Conference Proceedings (1996) 1 copia
Occasional papers 1 copia
Occasional papers 1 copia
Faculty for cooking 1 copia
Oral History Interviews 1 copia
The Bulletin of the University of Minnesota, West Central School and Station, Morris, Minnesota, Vol. 25: Announcement… (2017) 1 copia
Social Epidemiology 1 copia
Minnesota Archaeology Newsletter 1 copia
A university looks at its program the report of the University of Minnesota Bureau of Institutional Research, 1942-1952 (1999) 1 copia
Girls Series Books 1840-1991 1 copia
Opere correlate
Tchaikovsky: 1812 Festival Overture, Capriccio Italien / Beethoven: Wellington's Victory (1995) — Orchestra — 24 copie
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- Opere
- 62
- Opere correlate
- 1
- Utenti
- 90
- Popolarità
- #205,795
- Voto
- 2.7
- Recensioni
- 1
- ISBN
- 10
An analysis is presented of thermal hydraulic stability of flow in parallel channels. The dissertation presents work which consists of two parts. Part one deals with the development of a numerical (finite difference)
calculational program for analyzing both steady state and transient steam-water flows in a heated channel with a prescribed axial heat flux. The model is based on a one, dimensional drift velocity formulation of the two-phase flow conservation equations, including the effects of radial distribution of void and thermal non-equilibrium between the vapor and liquid phases. The following considerations are incorporated into the model: i) Attention is given to flow regimes so as to more properly define the use of available correlations for the constitutive equations.
iiiii)The analysis is extended to superheat regions. Heat effects due to tube walls are included in the analysis. Steady state as well as stability predictions are compared to available experimental results. In the second part, the equations are linearized by assuming small disturbances about the steady state. The dynamic response of the system to inlet flow perturbations is derived yielding the characteristic equation which predicts the onset of instabilities. For simplicity, the regional uniformly heated system is considered and the particular case of equal characteristic frequencies of two phase region and single phase gas region is studied in detail. The D-partition method and the Mikhailov stability criterion are used for mapping the stability boundary. The effects of various parameters, such as the heat flux inlet subcooling, pressure, inlet velocity, inlet orificing and exit orificing on the stability boundary are studied and the results are compared to available experimental results.… (altro)