Author
Nienchuan N. Lin
Bio: Nienchuan N. Lin is an academic researcher from University of Colorado Boulder. The author has contributed to research in topics: Rayleigh number & Optics. The author has an hindex of 1, co-authored 1 publications receiving 85 citations.
Papers
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TL;DR: In this article, an experimental and analytical study of the phenomenon of heat transfer by natural convection in a rectangular enclosure fitted with an incomplete internal partition is presented. But the authors do not consider the effect of the aperture ratio h/H on both the heat transfer rate and flow pattern.
88 citations
TL;DR: In this article , the authors present a new method for wavelength calibration that does not require measurement at the rest wavelength of the targeted spectral line, nor measurement using a tuneable laser source, and demonstrate to an accuracy of ± 1 pm (± 0.7 km/s flow-equivalent) over a 40 nm visible wavelength range.
Abstract: Imaging birefringent interferometers are used to measure plasma flow in 2-D via the Doppler shift of a spectral emission line. Applications include plasma physics study in fusion energy experiments and in the Earth's upper atmosphere. We present a new, to the best of our knowledge, method for wavelength calibration that does not require measurement at the rest wavelength of the targeted spectral line, nor measurement using a tuneable laser source. This is useful when such light sources are not available. Fringes measured at known wavelengths from the emission lines of gas-discharge lamps are used to constrain an instrument model which can generate the required calibration data. In the process, optical path difference, dispersion and misalignments are characterized. The "2π ambiguity" of interferogram phase data is handled using circular statistics, allowing the wavelength span of the calibration lines to far exceed the unambiguous measurement range of the instrument. The technique is demonstrated to an accuracy of ±1 pm (±0.7 km/s flow-equivalent) over a 40 nm visible wavelength range.
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Book•
01 Mar 1996
TL;DR: In this paper, the authors describe the fundamentals of passive cooling together with the principles and formulae necessary for its successful implementation in buildings in the EU, based on information and results compiled under the SAVE European Research Programme.
Abstract: Energy use in buildings in the EU represents about 40% of the total annual energy consumption. With greater awareness of the need to reduce energy consumption comes a growth of interest in passive cooling, particularly as an alternative to air-conditioning. This book describes the fundamentals of passive cooling together with the principles and formulae necessary for its successful implementation. The material is comprised largely of information and results compiled under the SAVE European Research Programme.
340 citations
TL;DR: In this article, the authors present an extensive review of studies about the natural convective heat transfer coefficient on isolated vertical and horizontal surfaces with special interest in their application to building geometries.
156 citations
TL;DR: In this paper, a two-dimensional double Multiple Relaxation Time-Thermal Lattice Boltzmann Equation (2-MRT-TLBE) method is developed for predicting convective flows in a square differentially heated cavity filled with air.
142 citations
TL;DR: In this paper, an extensive review of studies about natural convective heat transfer coefficients on surfaces in two-and three-dimensional enclosures with primary focus on those with a direct application to heat transfer in buildings is presented.
140 citations
TL;DR: In this article, a diathermal partition on the cold wall of an air-filled, differentially heated, inclined square cavity was studied at Rayleigh numbers of 103-105.
101 citations