Showing papers by "Young I. Cho published in 1997"
01 Jan 1997
TL;DR: In this article, the analogy between heat and mass transfer is covered and applied in the analysis of heat transfer by conduction, convection and radiation, and the analysis is performed by using the handbook of numerical heat transfer.
Abstract: Handbook of Numerical Heat Transfer Free Full Download Links from Multiple Mirrors added by DL4W on 2015-04-10 02:13:35. Handbook of heat transfer / editors, W.M. Rohsenow, J.P. Hartnett. Y.I. Cho. m 3rd ed. p. cm. Includes bibliographical references and index. ISBN 0-07053555-8. Students investigate heat transfer by conduction, convection and radiation. The analogy between heat and mass transfer is covered and applied in the analysis.
1,644 citations
TL;DR: In this article, the authors provided a scientific explanation for the operating principle of the electronic anti-fouling (EAF) technology, which produces an oscillating electric field via Faraday's law to provide necessary molecular agitation to dissolved mineral ions.
58 citations
Journal Article•
TL;DR: An accurate, convenient, and cost-effective blood viscometer that can be used in a clinical environment might become a useful diagnostic screening device for patients at risk for arterial occlusive disease, and it would help discover new prophylactic treatments.
Abstract: There is a high correlation between high whole blood viscosity and the well known risk factors for arterial occlusive disease: hypertension, hyperlipidemia, diabetes, male sex, age, smoking, and obesity. These risk factors increase whole blood viscosity, whereas the preventive factors of arterial occlusive disease such as fish oil, aspirin, alcohol, and exercise probably tend to reduce whole blood viscosity. The protective adaptation theory recently presented by Kensey and Cho1 proposed high whole blood viscosity as one of the major factors that make up the mechanical injury possibly inducing arterial occlusive disease. New diagnostic and prophylactic treatments for arterial occlusive disease are suggested. An accurate, convenient, and cost-effective blood viscometer that can be used in a clinical environment might become a useful diagnostic screening device for patients at risk for arterial occlusive disease, and it would help discover new prophylactic treatments.
28 citations
Patent•
29 Jan 1997
TL;DR: In this paper, the "hardness" of water flowing through a pipe, and attributable to ions dissolved in the water, is reduced by producing molecular agitation in water to transform the ions into much larger crystals, followed by filtration using a conventional filter having a mesh size much larger than the size of the ions, but smaller than the amount of the crystals.
Abstract: The "hardness" of water flowing through a pipe, and attributable to ions dissolved in the water, is reduced by producing molecular agitation in the water to transform the ions into much larger crystals, followed by filtration using a conventional filter having a mesh size much larger than the size of the ions, but smaller than the size of the crystals.
24 citations
Patent•
21 Jul 1997
TL;DR: In this paper, a humidifier is provided of the type which has a water tank or reservoir for holding tap water, and the electrodes are affixed to the interior of the tank to prevent calcium carbonate from precipitating on the surface of the cathodes.
Abstract: A humidifier is provided of the type which has a water tank or reservoir for holding tap water. Common tap water frequently is "hard" due to dissolved minerals which result in the humidifier emitting a fine dust when such water is used. By affixing electroplated electrodes to the interior of the tank minerals such as calcium carbonate can precipitate on the surface of the cathodes. Temporarily reversing the polarity of the electrodes will cause the calcium carbonate to be dislodged from the electrodes and fall to the bottom of the reservoir where it can be removed.
23 citations
TL;DR: In this article, the authors conducted microscopic observation of calcium carbonate crystallization process from both untreated and treated water samples by the electronic anti-fouling (EAF) technology as the water samples underwent drying process.
22 citations
TL;DR: In this article, the effects of channel height and Reynolds number on the local Nusselt number were considered in the range of H=0.5-1.5 and Re=100-900, respectively.
Abstract: Heat transfer characteristics of a submerged circular jet impingement with a confined plate was studied numerically. The continuity, momentum and energy equations were solved simultaneously. FIDAP, a finite element code, was used to formulate and solve the matrix equations for fluid elements. The effects of channel height and Reynolds number on the local Nusselt number were considered in the range of H=0.5–1.5 and Re=100–900, respectively. It was found that the channel height influenced strongly on the surface temperature, shear stress and pressure drop. The peak temperature was observed and gradually moved outward to the rim of the heated circular plate with increasing the Reynolds number, which may be related to flow recirculation region in the channel. It is also noted that the pressure drop increased more than the average heat transfer coefficient as the Reynolds number increased. For Pr=7, the Nusselt number was much more dependent on the Reynolds number than the channel height, and the magnitude of the second peak in the Nusselt number distribution increased as the Reynolds number increased. The local Nusselt number calculated based on a mixing-cup temperature was considerably different from that using the inlet nozzle temperature for H=0.5 and Re=100. The present study showed that the local Nusselt number of a confined submerged jet was significantly larger than that of the unconfined free jet which was available in the literature.
1 citations