TVENT: a computer program for analysis of tornado-induced transients in ventilation systems. [TVENT]

Duerre, K.H.; Andrae, R.W.; Gregory, W.S.

doi:10.2172/6644765

Cited by 5 publications

(4 citation statements)

References 0 publications

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“…TVENTlP (Andrae et al 1984) is a computer code developed to predict net flows, component flows, and pressures in a ventilation system network. TVENTlP is an enhanced version of the TVENT code (Duerre et al 1978), which is widely used for analyzing ventilation flow due to tornado induced pressure changes. TVENTlP code is similar to TVENT; however, it is more flexible and is applicable to all operational-type ventilation system analyses.…”

Section: Ventilation Modeling Computer Codementioning

confidence: 99%

Modeling for Airborne Contamination

Faillace¹,

Yuan²

2000

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This document serves as a guide for the performance of calculations affecting radiological aspects of health and safety. This report follows the Development Plan (DP) Checklist and Cover Sheet for Modeling for Airborne Contamination (CRWMS M&O 1999a). This report is written in accordance with AP-3.1 lQ, Technical Reports. An activity evaluation (CRWMS M&O 1999b) has been performed in accordance with procedure QAP-2-0, Conduct of Activities. While QAP-2-0 has been superceded by AP-2.21Q, Quality Determinations and Planning for ScientiJic, Engineering, and Regulatory Compliance Activities, this evaluation remains in effect. It has determined that the activities addressed in this report are subject to the requirements of the Quality Assurance Requirements and Description (DOE 2000, Section 2.0), since this report affects items on the Q-List (YMP 2000, Section 4.0). The application of methodologies and tabulated data in this report concerns MGR radiological controVsafety as well as subsurface worker health and safety. Therefore, this report is subject to technical baseline change in accordance with items 5.2d 3) and 4) of AP-3.11Q. A Technical Change Request (T1999-0098) has been prepared in accordance with AP-3.4Q, Level 3 Change Control. Electronic control of data used to generate the results presented in Section 6.8 is maintained by means of a read-only access CD-ROM disk containing the electronic input and output files. This CD-ROM is included as part of this report in Appendix E.

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Section: Ventilation Modeling Computer Codementioning

confidence: 99%

Modeling for Airborne Contamination

Faillace¹,

Yuan²

2000

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“…The relationship between pressure and flow for the elements is nonlinear and is written in general form ( 1) The volumetric flow rate is represented by Q, resistance by R, pressures at the ends of a branch by pi and pj, and an arbitrary exponent by N. This numerical scheme expansion of Eq. pressure p.…”

Section: Near-fieldmentioning

confidence: 99%

“…The report describes the evolution of the explosion code from the TVENT code. 1 We will "'eview our approach to the development of an explosion computer code and outline the desirable features of TVENT that are retained. We also describe the mass and energy equations added to the code to describe compressible fluid dynamics resulting from explosive events.…”

mentioning

confidence: 99%

Analysis of ventilation systems subjected to explosive transients: far-field analysis

Tang¹,

Andrae²,

Bolstad³

et al. 1981

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This report outlines progress in developing a far-field explosion simulation computer code. The term far-field implies that this computer code is suitable for modeling explosive transients in ventilation systems that are far removed from the explosive event and are rather insensitive to the particular characteristics of the exp 1 os i ve event. This type of analysis is useful when little detailed information is available and the explosive event is described parametrically. The code retains all the features of the TVENT code and allows completely compressible flow with inertia and choking effects. Problems that illustrate the capabilities and limitations of the code are described.

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“…The task is not any more difficult than finding the correction factors alone because there are only two unknowns involved as presented in Eq. (2). From now on, we will use "Eq.…”

Section: Introductionmentioning

confidence: 99%