Vahid Motevalli | Pennsylvania State University, Harrisburg (original) (raw)
Papers by Vahid Motevalli
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Technologies
Innovations in engineering education are undergoing a noticeable transformation. Higher education... more Innovations in engineering education are undergoing a noticeable transformation. Higher education institutions are practicing distance education, remote laboratories, studio pedagogies and several other approaches in order to increase their students’ retention, success, and preparedness for the job market. In engineering education, maker spaces have become popular in the last ten years in universities as well as community colleges, high schools and community innovation hubs. A large number of engineering colleges have allocated significant spaces, and at some universities entire buildings, as maker spaces to be used for curricular and extracurricular activities. Success stories of these types of spaces are well documented. This paper describes the core activities and programs held at Tennessee Tech University’s maker space called ‘iMakerSpace.’ Accomplishments include several innovative workforce development activities. The impact and effectiveness of the iMakerSpace, presented thro...
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Innovations in engineering education are undergoing a noticeable transformation. Higher education... more Innovations in engineering education are undergoing a noticeable transformation. Higher education institutions are practicing distance education, remote laboratories, studio pedagogies and several other approaches in order to increase their students’ retention, success, and preparedness for the job market. In engineering education, maker spaces have become popular in the last ten years in universities as well as community colleges, high-schools and community innovation hubs. A large number of engineering colleges have allocated significant spaces, and at some universities entire buildings as maker spaces to be used for curricular and extracurricular activities. Success stories of these types of spaces are well documented. This paper describes the activities and programs held at Tennessee Tech University’s maker space called ‘iMakerSpace.’ These accomplishments include several workforce development activities. The impact and effectiveness of the iMakerSpace is evaluated through analy...
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Proceedings of the World Congress on Momentum, Heat and Mass Transfer, 2016
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Journal of Applied Fire Science, 1999
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Research Laboratory of the National Institute of Standards and Technology under grant number 60NA... more Research Laboratory of the National Institute of Standards and Technology under grant number 60NANBOD1049. The statements and conclusions contained in this report are those of the authors and do not necessarily reflect the views of the National Institute of ...
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Fire Safety Science, 1994
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SAE Technical Paper Series, 2011
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Journal of Heat Transfer, 1992
A technique utilizing thermocouple pairs as sensors to measure velocity and temperature profiles ... more A technique utilizing thermocouple pairs as sensors to measure velocity and temperature profiles in low-speed, turbulent, nonisothermal flows is described here. In this technique, Cross-Correlation Velocimetry (CCV), the temperature-time records from a pair of thermocouples, one downstream of the other, are cross-correlated to determine the flow’s preferred mean velocity while temperature is measured directly. The velocity measurements have undergone extensive verification using hotwire, pitot tube, and Laser-Doppler Velocimetry to determine the degree of confidence in this technique. This work demonstrates that the CCV technique is quite reliable and can measure the mean preferred component of the convective velocity with better than ±5 percent certainty. Application of this technique to the measurement of velocities in a ceiling jet induced by a fire plume is briefly presented here.
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Fire Safety Journal, 1998
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Combustion Science and Technology, 1995
A methodology for deriving material pyrolysis properties is proposed and validated by using three... more A methodology for deriving material pyrolysis properties is proposed and validated by using three charring materials (pure cellulose, and two different particle boards designated as N and F). The methodology uses experimental data obtained in a pyrolysis apparatus together with an accurate integral thermal pyrolysis model for the charring pyrolysis process (see CST, 88, 309-328, 1993). The effects of various
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Fire Safety Science, 1994
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Transportation Research Record: Journal of the Transportation Research Board, 2010
Page 1. therefore be critical to mitigate any subsequent increased external risk as well as facil... more Page 1. therefore be critical to mitigate any subsequent increased external risk as well as facilitate societal acceptance of risk exposure. With-out societal acceptance, the introduction of high-volume operations at nontowered airports could be forestalled. ...
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Volume 15: Safety, Reliability and Risk; Virtual Podium (Posters), 2013
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Journal of Aircraft, 2008
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Combustion Science and Technology, 1993
... This is certainly unexpected and a possible cause may be the difference between the present p... more ... This is certainly unexpected and a possible cause may be the difference between the present puff generation mechanism and that of aqueous experiments (Johari, 1992 ... Figure 7 is a plot of normalized flame length versus duty-cycle for injection times of 25, 50, 100, and 150 ms. ...
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Volume 15: Safety, Reliability and Risk; Virtual Podium (Posters), 2013
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ASME/JSME 2007 Thermal Engineering Heat Transfer Summer Conference, Volume 1, 2007
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International Journal of Mass Spectrometry and Ion Processes, 1992
... 95 Elsevier Science Publishers BV, Amsterdam Positive ion chemistry related to hydrocarbon fl... more ... 95 Elsevier Science Publishers BV, Amsterdam Positive ion chemistry related to hydrocarbon flames doped with CF3 Br Robert A. Morris', Eileen R. Brown a,1,Z ... The value of 3.3 x 10' cm3 s' for reaction (4) measured by Heckel and Hanrahan [6] in an ion sourcetimeofflight mass ...
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Journal of Applied Fire Science, 1999
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Bookmarks Related papers MentionsView impact
Technologies
Innovations in engineering education are undergoing a noticeable transformation. Higher education... more Innovations in engineering education are undergoing a noticeable transformation. Higher education institutions are practicing distance education, remote laboratories, studio pedagogies and several other approaches in order to increase their students’ retention, success, and preparedness for the job market. In engineering education, maker spaces have become popular in the last ten years in universities as well as community colleges, high schools and community innovation hubs. A large number of engineering colleges have allocated significant spaces, and at some universities entire buildings, as maker spaces to be used for curricular and extracurricular activities. Success stories of these types of spaces are well documented. This paper describes the core activities and programs held at Tennessee Tech University’s maker space called ‘iMakerSpace.’ Accomplishments include several innovative workforce development activities. The impact and effectiveness of the iMakerSpace, presented thro...
Bookmarks Related papers MentionsView impact
Innovations in engineering education are undergoing a noticeable transformation. Higher education... more Innovations in engineering education are undergoing a noticeable transformation. Higher education institutions are practicing distance education, remote laboratories, studio pedagogies and several other approaches in order to increase their students’ retention, success, and preparedness for the job market. In engineering education, maker spaces have become popular in the last ten years in universities as well as community colleges, high-schools and community innovation hubs. A large number of engineering colleges have allocated significant spaces, and at some universities entire buildings as maker spaces to be used for curricular and extracurricular activities. Success stories of these types of spaces are well documented. This paper describes the activities and programs held at Tennessee Tech University’s maker space called ‘iMakerSpace.’ These accomplishments include several workforce development activities. The impact and effectiveness of the iMakerSpace is evaluated through analy...
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Proceedings of the World Congress on Momentum, Heat and Mass Transfer, 2016
Bookmarks Related papers MentionsView impact
Journal of Applied Fire Science, 1999
Bookmarks Related papers MentionsView impact
Research Laboratory of the National Institute of Standards and Technology under grant number 60NA... more Research Laboratory of the National Institute of Standards and Technology under grant number 60NANBOD1049. The statements and conclusions contained in this report are those of the authors and do not necessarily reflect the views of the National Institute of ...
Bookmarks Related papers MentionsView impact
Fire Safety Science, 1994
Bookmarks Related papers MentionsView impact
SAE Technical Paper Series, 2011
Bookmarks Related papers MentionsView impact
Journal of Heat Transfer, 1992
A technique utilizing thermocouple pairs as sensors to measure velocity and temperature profiles ... more A technique utilizing thermocouple pairs as sensors to measure velocity and temperature profiles in low-speed, turbulent, nonisothermal flows is described here. In this technique, Cross-Correlation Velocimetry (CCV), the temperature-time records from a pair of thermocouples, one downstream of the other, are cross-correlated to determine the flow’s preferred mean velocity while temperature is measured directly. The velocity measurements have undergone extensive verification using hotwire, pitot tube, and Laser-Doppler Velocimetry to determine the degree of confidence in this technique. This work demonstrates that the CCV technique is quite reliable and can measure the mean preferred component of the convective velocity with better than ±5 percent certainty. Application of this technique to the measurement of velocities in a ceiling jet induced by a fire plume is briefly presented here.
Bookmarks Related papers MentionsView impact
Fire Safety Journal, 1998
Bookmarks Related papers MentionsView impact
Combustion Science and Technology, 1995
A methodology for deriving material pyrolysis properties is proposed and validated by using three... more A methodology for deriving material pyrolysis properties is proposed and validated by using three charring materials (pure cellulose, and two different particle boards designated as N and F). The methodology uses experimental data obtained in a pyrolysis apparatus together with an accurate integral thermal pyrolysis model for the charring pyrolysis process (see CST, 88, 309-328, 1993). The effects of various
Bookmarks Related papers MentionsView impact
Fire Safety Science, 1994
Bookmarks Related papers MentionsView impact
Transportation Research Record: Journal of the Transportation Research Board, 2010
Page 1. therefore be critical to mitigate any subsequent increased external risk as well as facil... more Page 1. therefore be critical to mitigate any subsequent increased external risk as well as facilitate societal acceptance of risk exposure. With-out societal acceptance, the introduction of high-volume operations at nontowered airports could be forestalled. ...
Bookmarks Related papers MentionsView impact
Volume 15: Safety, Reliability and Risk; Virtual Podium (Posters), 2013
Bookmarks Related papers MentionsView impact
Journal of Aircraft, 2008
Bookmarks Related papers MentionsView impact
Combustion Science and Technology, 1993
... This is certainly unexpected and a possible cause may be the difference between the present p... more ... This is certainly unexpected and a possible cause may be the difference between the present puff generation mechanism and that of aqueous experiments (Johari, 1992 ... Figure 7 is a plot of normalized flame length versus duty-cycle for injection times of 25, 50, 100, and 150 ms. ...
Bookmarks Related papers MentionsView impact
Volume 15: Safety, Reliability and Risk; Virtual Podium (Posters), 2013
Bookmarks Related papers MentionsView impact
ASME/JSME 2007 Thermal Engineering Heat Transfer Summer Conference, Volume 1, 2007
Bookmarks Related papers MentionsView impact
International Journal of Mass Spectrometry and Ion Processes, 1992
... 95 Elsevier Science Publishers BV, Amsterdam Positive ion chemistry related to hydrocarbon fl... more ... 95 Elsevier Science Publishers BV, Amsterdam Positive ion chemistry related to hydrocarbon flames doped with CF3 Br Robert A. Morris', Eileen R. Brown a,1,Z ... The value of 3.3 x 10' cm3 s' for reaction (4) measured by Heckel and Hanrahan [6] in an ion sourcetimeofflight mass ...
Bookmarks Related papers MentionsView impact
Journal of Applied Fire Science, 1999
Bookmarks Related papers MentionsView impact