Temporal variation of the pressure from a steady impinging jet model of dry microburst-like wind using URANS
The objective of this study is to investigate the temporal behavior of the pressure field of a stationary dry microburst-like wind phenomenon utilizing Unsteady Reynolds-averaged Navier-Stokes (URANS) numerical simulations. Using an axisymmetric steady impinging jet model, the dry microburst-like wi...
| Main Authors: | , , |
|---|---|
| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2018
|
| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/86581 http://hdl.handle.net/10220/45299 |
| _version_ | 1811687620175986688 |
|---|---|
| author | Skote, Martin Srikanth, Narasimalu Sim, Tze Siang |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Skote, Martin Srikanth, Narasimalu Sim, Tze Siang |
| author_sort | Skote, Martin |
| collection | NTU |
| description | The objective of this study is to investigate the temporal behavior of the pressure field of a stationary dry microburst-like wind phenomenon utilizing Unsteady Reynolds-averaged Navier-Stokes (URANS) numerical simulations. Using an axisymmetric steady impinging jet model, the dry microburst-like wind is simulated from the initial release of a steady downdraft flow, till the time after the primary vortices have fully convected out of the stagnation region. The validated URANS results presented herein shed light on the temporal variation of the pressure field which is in agreement with the qualitative description obtained from field measurements. The results have an impact on understanding the wind load on structures from the initial touch-down phase of the downdraft from a microburst. The investigation is based on CFD techniques, together with a simple impinging jet model that does not include any microphysical processes. Unlike previous investigations, this study focuses on the transient pressure field from a downdraft without obstacles. |
| first_indexed | 2024-10-01T05:19:12Z |
| format | Journal Article |
| id | ntu-10356/86581 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:19:12Z |
| publishDate | 2018 |
| record_format | dspace |
| spelling | ntu-10356/865812023-03-04T17:16:03Z Temporal variation of the pressure from a steady impinging jet model of dry microburst-like wind using URANS Skote, Martin Srikanth, Narasimalu Sim, Tze Siang School of Mechanical and Aerospace Engineering Energy Research Institute @ NTU (ERI@N) Microburst Impinging Jet The objective of this study is to investigate the temporal behavior of the pressure field of a stationary dry microburst-like wind phenomenon utilizing Unsteady Reynolds-averaged Navier-Stokes (URANS) numerical simulations. Using an axisymmetric steady impinging jet model, the dry microburst-like wind is simulated from the initial release of a steady downdraft flow, till the time after the primary vortices have fully convected out of the stagnation region. The validated URANS results presented herein shed light on the temporal variation of the pressure field which is in agreement with the qualitative description obtained from field measurements. The results have an impact on understanding the wind load on structures from the initial touch-down phase of the downdraft from a microburst. The investigation is based on CFD techniques, together with a simple impinging jet model that does not include any microphysical processes. Unlike previous investigations, this study focuses on the transient pressure field from a downdraft without obstacles. NRF (Natl Research Foundation, S’pore) Published version 2018-07-27T04:20:29Z 2019-12-06T16:25:11Z 2018-07-27T04:20:29Z 2019-12-06T16:25:11Z 2018 Journal Article Skote, M., Sim, T. S., & Srikanth, N. (2018). Temporal variation of the pressure from a steady impinging jet model of dry microburst-like wind using URANS. Computation, 6(1), 2-. 2079-3197 https://hdl.handle.net/10356/86581 http://hdl.handle.net/10220/45299 10.3390/computation6010002 en Computation © 2018 The Author(s). Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). 12 p. application/pdf |
| spellingShingle | Microburst Impinging Jet Skote, Martin Srikanth, Narasimalu Sim, Tze Siang Temporal variation of the pressure from a steady impinging jet model of dry microburst-like wind using URANS |
| title | Temporal variation of the pressure from a steady impinging jet model of dry microburst-like wind using URANS |
| title_full | Temporal variation of the pressure from a steady impinging jet model of dry microburst-like wind using URANS |
| title_fullStr | Temporal variation of the pressure from a steady impinging jet model of dry microburst-like wind using URANS |
| title_full_unstemmed | Temporal variation of the pressure from a steady impinging jet model of dry microburst-like wind using URANS |
| title_short | Temporal variation of the pressure from a steady impinging jet model of dry microburst-like wind using URANS |
| title_sort | temporal variation of the pressure from a steady impinging jet model of dry microburst like wind using urans |
| topic | Microburst Impinging Jet |
| url | https://hdl.handle.net/10356/86581 http://hdl.handle.net/10220/45299 |
| work_keys_str_mv | AT skotemartin temporalvariationofthepressurefromasteadyimpingingjetmodelofdrymicroburstlikewindusingurans AT srikanthnarasimalu temporalvariationofthepressurefromasteadyimpingingjetmodelofdrymicroburstlikewindusingurans AT simtzesiang temporalvariationofthepressurefromasteadyimpingingjetmodelofdrymicroburstlikewindusingurans |