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Journal of Flow Visualization and Image Processing

Erscheint 4 Ausgaben pro Jahr

ISSN Druckformat: 1065-3090

ISSN Online: 1940-4336

The Impact Factor measures the average number of citations received in a particular year by papers published in the journal during the two preceding years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) IF: 0.6 The Immediacy Index is the average number of times an article is cited in the year it is published. The journal Immediacy Index indicates how quickly articles in a journal are cited. Immediacy Index: 0.6 The Eigenfactor score, developed by Jevin West and Carl Bergstrom at the University of Washington, is a rating of the total importance of a scientific journal. Journals are rated according to the number of incoming citations, with citations from highly ranked journals weighted to make a larger contribution to the eigenfactor than those from poorly ranked journals. Eigenfactor: 0.00013 The Journal Citation Indicator (JCI) is a single measurement of the field-normalized citation impact of journals in the Web of Science Core Collection across disciplines. The key words here are that the metric is normalized and cross-disciplinary. JCI: 0.14 SJR: 0.201 SNIP: 0.313 CiteScore™:: 1.2 H-Index: 13

Indexed in

CFD ANALYSIS OF THERMAL COMFORT AND AIR QUALITY INDICES WITHIN AN AIR-CONDITIONED MOBILE COMMUNICATION VEHICLE

Volumen 15, Ausgabe 2, 2008, pp. 101-127
DOI: 10.1615/JFlowVisImageProc.v15.i2.20
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ABSTRAKT

The interior of mobile communication vehicles is relatively compact, and various collocated communication equipment producing heat in the compartment should be effectively distributed. If the air outlets of air-conditioning systems are not designed with a proper location, operators will feel uncomfortable in those working environments. In this investigation, the computational fluid dynamics (CFD) method was used to simulate the flow field and the temperature distribution inside the compartment of a mobile communication vehicle under different configurations of air-conditioning units.
The three-dimensional thermal-flow field was solved by steady incompressible Reynolds-averaged Navier-Stokes equations (RANS) with the control volume method. The buoyancy effect was assumed with the Boussinesq hypothesis, and the turbulent model was the standard k−ε turbulence model. The indices such as predicted mean vote (PMV), predicted percentage of dissatisfied (PPD), percentage of dissatisfied due to draught (PD), and mean air age were studied to analyze the comfort level and indoor air quality (IAQ) inside the compartment.
Before the numerical simulations, the velocities of air outlets and the temperatures of air-conditioning units were measured to serve as prescribed boundary conditions for the simulations. Three cases with different layouts of air outlets were simulated to study their influence on the uniformity of thermal comfort distributions. The simulation results revealed the PMV and PPD indices of all three cases conformed to the standard value, but all PD indices exceeded or approached the critical value of the standard value. All PD indices of the three cases were up to 45% at the abdomen of sitting operators, which will obviously lead to discomfort. This result agrees with the response of operators. The reason for this discomfort was the cold airflow with high velocity from the outlets in the floor beneath the control platform.
The simulation also showed the cold air supply on floor could efficiently exchange heat production from equipment, especially when the fresh air inlet was located at the upper-backside or front-top of the compartment. Further, the air age in the upper area of compartment was low when the fresh air inlet was located at the upper backside or front top of the compartment.

REFERENZIERT VON
  1. Wang Yuemei, Lian Zhiwei, Broede Peter, Lan Li, A time-dependent model evaluating draft in indoor environment, Energy and Buildings, 49, 2012. Crossref

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