... branch solutions when the velocity ratio is varied. To assess which of these solutions is practically realizable, an asymptotic analysis on unsteady perturbations for a large time leading to linear stability needs to be performed. This shows that the upper branch solutions are always stable...

...S. B. Naveen; B. M. Shankar; I. S. Shivakumara The simultaneous effect of a time-dependent velocity term in the momentum equation and a maximum density property on the stability of natural convection in a vertical layer of Darcy porous medium is investigated. The density is assumed to vary...

...Ramesh B. Kudenatti; Noor E. Misbah; M. C. Bharathi This paper studies the linear stability of the unsteady boundary-layer flow and heat transfer over a moving wedge. Both mainstream flow outside the boundary layer and the wedge velocities are approximated by the power of the distance along...

... (LHP)-based hydraulic temperature control was investigated to improve the stability of the proposed technique. Start-up characteristics and transient responses of the operating temperatures to different pressure steps and sink temperatures were examined. From the test results, it was found...

... ,” Prog. Nucl. Energy , 47 , pp. 271 – 282 . 10.1016/j.pnucene.2005.05.077 [6] Chatoorgoon , V. , Voodi , A. , and Fraser , D. , 2005 , “ The Stability Boundary for Supercritical Flow in Natural Convection Loops Part I: H2O Studies ,” Nucl. Eng. Des. , 235 , pp. 2570 – 2580...

... in literature. Marginal curve with S mode for the case of low amplitude η = 1 for K r = χ r = 0.1 The effects of K r on the stability boundaries for different values of η are displayed in Fig. 10 . We find that K r leaves a destabilizing...

... on the solutions of the full steady governing equations, this paper also presents unsteady solutions that characterize the steady solutions’ attainability, stability (response to initial disturbances), and their response to ever-present minuscule noise on the condensing-surface. For this shear-driven flow...

... of height:diameter ratio of 1.9. Heating is with a constant flux lower surface and a constant temperature upper surface, and the stability criterion is determined for a step heat input. The critical Rayleigh number for the onset of convection is obtained in terms of a length scale normalized to the thermal...

... explicit or implicit finite difference schemes using only the perturbation terms; (2) development of new finite difference schemes, referred to as hybrid equations, which have better stability properties than the classical finite difference equations, permitting the use of larger values of the parameter ρ...

...Satish G. Kandlikar; Wai Keat Kuan; Daniel A. Willistein; John Borrelli The flow boiling process suffers from severe instabilities induced due to nucleation of vapor bubbles in a superheated liquid environment in a minichannel or a microchannel. In an effort to improve the flow boiling stability...

...N. M. Rao; B. Maiti; P. K. Das The present investigation describes the stability behavior of NCL with end heat exchangers. The one-dimensional transient conservation equations of the loop fluid and the two fluid streams of cold end and hot end heat exchangers are solved simultaneously using...

...Nancy Ma; John S. Walker; Laurent Martin Witkowski This paper presents a linear stability analysis for the thermocapillary convection in a liquid bridge bounded by two planar liquid-solid interfaces at the same temperature and by a cylindrical free surface with an axisymmetric heat input. The two...

... by classical methods. We will consider this problem with a regularizing parameter which approximates and regularizes the heat conduction model. heat conduction inverse problems temperature distribution temperature measurement Analytical Heat Transfer Inverse Stability Temperature 3...

... the numerically predicted steady axisymmetry-breaking bifurcation. The stability of convective flows in a two-dimensional rectangular cavity with similarly heated/insulated sidewalls was studied in 28 29 , where among several bifurcations of different type we found multiple...

...S. Generalis; M. Nagata The transition of internally heated inclined plane parallel shear flows is examined numerically for the case of finite values of the Prandtl number Pr. We show that as the strength of the homogeneously distributed heat source is increased the basic flow loses stability...

...Masato Nagata; Sotos Generalis The stability of internally heated convective flows in a vertical channel under the influence of a pressure gradient and in the limit of small Prandtl number is examined numerically. In each of the cases studied the basic flow, which can have two inflection points...

...) H b = H o − γ a β z 1 + χ o   H o k , M b = M o + γ a β z 1 + χ o   H o k . Now we will perform a linear stability analysis of the motionless state. Equations ( 6 ), ( 7b ), ( 13 ) and ( 14...

...W. H. Chen The flame structure and stability, as well as the vaporization rates of twin droplets exposed to a high-temperature, partially premixed flow are investigated in the present study. Two important parameters of the Reynolds number and ambient equivalence ratio are taken into consideration...

... , S. M. , 1996 , “ Heater Orientation Effects on Pool Boiling of Micro-Porous-Enhanced Surfaces in Saturated FC-72 ,” ASME J. Heat Transfer , 118 , pp. 937 – 943 . Lin , W. W. , Yang , J. C. , and Lee , D. J. , 1998 , “ Boiling Stability Characteristics of Methanol Flowing over...

...W. W. Lin; J. C. Yang; D. J. Lee Boiling Geometry Heat Transfer Stability Barrstar M. J. , and Merte H. , 1997 , “ Effect of Heater Surface Orientation on the Critical Heat Flux–I. An Experimental Evaluation of Models for Subcooled Pool Boiling ,” Int. J. Heat Mass...