Natural convection in a vertical rectangular enclosure with symmetrically localized heating and cooling zones

Ishihara, Isao; Fukui, Taichiro; Matsumoto, Ryosuke

doi:10.1016/s0142-727x(02)00184-4

Cited by 27 publications

(8 citation statements)

References 4 publications

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“…Greek symbols a thermal diffusivity of fluid [m 2 [18,19]. The conclusions were similar to the results obtained by the listed above researchers, i.e.…”

Section: Introductionsupporting

confidence: 85%

“…The topic related to the thermosyphon geometry has been studied since the sixties of 20th century. Various aspects of the thermosyphon were studied by 0894 [13], Japikse et al [15], Mallinson et al [14], Lock and Liu [16], Lock and Kirchner [17], Ishihara et al [18,19]. They investigated the thermal conditions, geometrical ratios, inclination angles and the influence of these parameters on the fluid flow and the heat transfer.…”

Section: Introductionmentioning

confidence: 99%

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Experimental study on the magnetic convection in a vertical cylinder

Fornalik

Filar

Tagawa

et al. 2005

Experimental Thermal and Fluid Science

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“…Greek symbols a thermal diffusivity of fluid [m 2 [18,19]. The conclusions were similar to the results obtained by the listed above researchers, i.e.…”

Section: Introductionsupporting

confidence: 85%

Section: Introductionmentioning

confidence: 99%

Experimental study on the magnetic convection in a vertical cylinder

Fornalik

Filar

Tagawa

et al. 2005

Experimental Thermal and Fluid Science

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“…So, it is possible for the AFC, PEMFC and DMFC to use TLCs technique to measure external surface temperature distributions. The technique had been applied in analysis of heat transfer and flow fluid (Colucci and Viskanta, 1996;Maflat, 1990;Ishihara et al, 2002;Wozniak and Wozniak, 1991), nondestructive testing (Fergason, 1968) and medical diagnosis (Kim and Yoon, 1997).…”

Section: Thermochromatic Liquid Crystalmentioning

confidence: 99%

Temperature Measurement Technologies and Their Application in the Research of Fuel Cells

Wang

Guo

Fang

et al. 2003

1st International Fuel Cell Science, Engineering and Technology Conference

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Fuel cells have attracted extensive attention throughout the world in recent years for their high efficiency and high environmental compatibility. Temperature plays a key role in achieving high performance of fuel cells because it deeply influences the activity of catalyst, dehydration of solid polymer membrane, mass transfer and heat management of fuel cells. The temperature distribution has close relationship with current density distribution and lifetime of fuel cells because the uniformity of temperature distribution is a quite important problem for fuel cells. In this paper, a review of temperature measurement technologies that can be used to measure temperature distribution of fuel cells was presented. The measurement of cathode exterior surface temperature fields of a hydrogen proton exchange membrane fuel cell under various operational conditions was conducted by using the technology of infrared thermal imaging. The proton exchange membrane fuel cell structure was designed for uniformity of input heat. A NEC TH5102 thermo tracer was applied to measure the cathode exterior surface temperature distributions of the cell with 5cm 2 active area. The experimental results showed that the infrared thermal imaging is an effective method to measure the exterior temperature fields of the PEMFC. The cathode temperature distributions of the cell varied with cell temperatures and flow rates.

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“…Papers dealing with the second type of heating/cooling conditions include the studies conducted by (a) Poulikakos [17], Frederick [18], and Ishihara et al [19], on enclosures heated and cooled symmetrically along a single vertical wall; and (b) Ishihara et al [20] and Li and coworkers [21][22][23], on enclosures with both sides symmetrically heated at their lower portions and cooled at their upper portions. Variants of the (a) configuration just mentioned are situations wherein the multidirectional heat flow derives from a symmetric sinusoidal temperature profile applied at a single wall; see, e.g., Sarris et al [24] and Bilgen and Ben Yedder [25].…”

Section: Introductionmentioning

confidence: 99%

Natural Convection Heat and Momentum Transfer in Rectangular Enclosures Heated at the Lower Portion of the Sidewalls and the Bottom Wall and Cooled at the Remaining Upper Portion of the Sidewalls and the Top Wall

Caronna

Corcione

Habib

2009

Heat Transfer Engineering

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Laminar natural convection inside air-filled, rectangular enclosures heated from below and cooled from above, with the lower portions of both sidewalls maintained at the temperature of the bottom wall, and the remaining upper portions of the sidewalls maintained at the temperature of the top wall, is studied numerically. A control volume formulation of the finite-difference method is used for the solution of the mass, momentum, and energy transfer governing equations. Simulations are performed for height-to-width aspect ratios of the cavity from 1 to 5, Rayleigh numbers based on the height of the cavity from 5 x 10(2) to 5 x 10(6), and values of the heated fractions of both sidewalls from 0 to 1. It is found that when the heated portions of the two sidewalls are different in length, a steady-state solution is reached, with a basic three-cell flow pattern. In contrast, when the heated fractions of the sidewalls are the same, the asymptotic solution may be either stationary, with a flow field consisting of two pairs of superimposed roll cells, or periodic, with a flow pattern consisting of a primary cell and two secondary cells that pulsate about the center of the enclosure. Dimensionless heat transfer correlating equations are proposed

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Natural convection in a vertical rectangular enclosure with symmetrically localized heating and cooling zones

Cited by 27 publications

References 4 publications

Experimental study on the magnetic convection in a vertical cylinder

Experimental study on the magnetic convection in a vertical cylinder

Temperature Measurement Technologies and Their Application in the Research of Fuel Cells

Natural Convection Heat and Momentum Transfer in Rectangular Enclosures Heated at the Lower Portion of the Sidewalls and the Bottom Wall and Cooled at the Remaining Upper Portion of the Sidewalls and the Top Wall

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