Estimation of Surface Heat Flux and Surface Temperature during Inverse Heat Conduction under Varying Spray Parameters and Sample Initial Temperature
An experimental study was carried out to investigate the effects of inlet pressure, sample thickness, initial sample temperature, and temperature sensor location on the surface heat flux, surface temperature, and surface ultrafast cooling rate using stainless steel samples of diameter 27 mm and thic...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2014-01-01
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| Series: | The Scientific World Journal |
| Online Access: | http://dx.doi.org/10.1155/2014/721620 |
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| _version_ | 1832561007547908096 |
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| author | Muhammad Aamir Qiang Liao Xun Zhu Aqeel-ur-Rehman Hong Wang Muhammad Zubair |
| author_facet | Muhammad Aamir Qiang Liao Xun Zhu Aqeel-ur-Rehman Hong Wang Muhammad Zubair |
| author_sort | Muhammad Aamir |
| collection | DOAJ |
| description | An experimental study was carried out to investigate the effects of inlet pressure, sample thickness, initial sample temperature, and temperature sensor location on the surface heat flux, surface temperature, and surface ultrafast cooling rate using stainless steel samples of diameter 27 mm and thickness (mm) 8.5, 13, 17.5, and 22, respectively. Inlet pressure was varied from 0.2 MPa to 1.8 MPa, while sample initial temperature varied from 600°C to 900°C. Beck’s sequential function specification method was utilized to estimate surface heat flux and surface temperature. Inlet pressure has a positive effect on surface heat flux (SHF) within a critical value of pressure. Thickness of the sample affects the maximum achieved SHF negatively. Surface heat flux as high as 0.4024 MW/m2 was estimated for a thickness of 8.5 mm. Insulation effects of vapor film become apparent in the sample initial temperature range of 900°C causing reduction in surface heat flux and cooling rate of the sample. A sensor location near to quenched surface is found to be a better choice to visualize the effects of spray parameters on surface heat flux and surface temperature. Cooling rate showed a profound increase for an inlet pressure of 0.8 MPa. |
| format | Article |
| id | doaj-art-3b51fb644e084067873106686ffe9adf |
| institution | Kabale University |
| issn | 2356-6140 1537-744X |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | The Scientific World Journal |
| spelling | doaj-art-3b51fb644e084067873106686ffe9adf2025-02-03T01:26:09ZengWileyThe Scientific World Journal2356-61401537-744X2014-01-01201410.1155/2014/721620721620Estimation of Surface Heat Flux and Surface Temperature during Inverse Heat Conduction under Varying Spray Parameters and Sample Initial TemperatureMuhammad Aamir0Qiang Liao1Xun Zhu2Aqeel-ur-Rehman3Hong Wang4Muhammad Zubair5Key Laboratory of Low-grade Energy Utilization Technologies and Systems, Chongqing University, Chongqing 400030, ChinaKey Laboratory of Low-grade Energy Utilization Technologies and Systems, Chongqing University, Chongqing 400030, ChinaKey Laboratory of Low-grade Energy Utilization Technologies and Systems, Chongqing University, Chongqing 400030, ChinaCollege of Computer Science and Engineering, Chongqing University, Chongqing 400030, ChinaKey Laboratory of Low-grade Energy Utilization Technologies and Systems, Chongqing University, Chongqing 400030, ChinaDepartment of Basic Sciences, University of Engineering and Technology (UET), Taxila 47080, PakistanAn experimental study was carried out to investigate the effects of inlet pressure, sample thickness, initial sample temperature, and temperature sensor location on the surface heat flux, surface temperature, and surface ultrafast cooling rate using stainless steel samples of diameter 27 mm and thickness (mm) 8.5, 13, 17.5, and 22, respectively. Inlet pressure was varied from 0.2 MPa to 1.8 MPa, while sample initial temperature varied from 600°C to 900°C. Beck’s sequential function specification method was utilized to estimate surface heat flux and surface temperature. Inlet pressure has a positive effect on surface heat flux (SHF) within a critical value of pressure. Thickness of the sample affects the maximum achieved SHF negatively. Surface heat flux as high as 0.4024 MW/m2 was estimated for a thickness of 8.5 mm. Insulation effects of vapor film become apparent in the sample initial temperature range of 900°C causing reduction in surface heat flux and cooling rate of the sample. A sensor location near to quenched surface is found to be a better choice to visualize the effects of spray parameters on surface heat flux and surface temperature. Cooling rate showed a profound increase for an inlet pressure of 0.8 MPa.http://dx.doi.org/10.1155/2014/721620 |
| spellingShingle | Muhammad Aamir Qiang Liao Xun Zhu Aqeel-ur-Rehman Hong Wang Muhammad Zubair Estimation of Surface Heat Flux and Surface Temperature during Inverse Heat Conduction under Varying Spray Parameters and Sample Initial Temperature The Scientific World Journal |
| title | Estimation of Surface Heat Flux and Surface Temperature during Inverse Heat Conduction under Varying Spray Parameters and Sample Initial Temperature |
| title_full | Estimation of Surface Heat Flux and Surface Temperature during Inverse Heat Conduction under Varying Spray Parameters and Sample Initial Temperature |
| title_fullStr | Estimation of Surface Heat Flux and Surface Temperature during Inverse Heat Conduction under Varying Spray Parameters and Sample Initial Temperature |
| title_full_unstemmed | Estimation of Surface Heat Flux and Surface Temperature during Inverse Heat Conduction under Varying Spray Parameters and Sample Initial Temperature |
| title_short | Estimation of Surface Heat Flux and Surface Temperature during Inverse Heat Conduction under Varying Spray Parameters and Sample Initial Temperature |
| title_sort | estimation of surface heat flux and surface temperature during inverse heat conduction under varying spray parameters and sample initial temperature |
| url | http://dx.doi.org/10.1155/2014/721620 |
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