Skip Nav Destination
Close Modal
Update search
Filter
- Title
- Author
- Author Affiliations
- Full Text
- Abstract
- Keyword
- DOI
- ISBN
- ISBN-10
- ISSN
- EISSN
- Issue
- Volume
- References
- Conference Volume
- Paper No
Filter
- Title
- Author
- Author Affiliations
- Full Text
- Abstract
- Keyword
- DOI
- ISBN
- ISBN-10
- ISSN
- EISSN
- Issue
- Volume
- References
- Conference Volume
- Paper No
Filter
- Title
- Author
- Author Affiliations
- Full Text
- Abstract
- Keyword
- DOI
- ISBN
- ISBN-10
- ISSN
- EISSN
- Issue
- Volume
- References
- Conference Volume
- Paper No
Filter
- Title
- Author
- Author Affiliations
- Full Text
- Abstract
- Keyword
- DOI
- ISBN
- ISBN-10
- ISSN
- EISSN
- Issue
- Volume
- References
- Conference Volume
- Paper No
Filter
- Title
- Author
- Author Affiliations
- Full Text
- Abstract
- Keyword
- DOI
- ISBN
- ISBN-10
- ISSN
- EISSN
- Issue
- Volume
- References
- Conference Volume
- Paper No
Filter
- Title
- Author
- Author Affiliations
- Full Text
- Abstract
- Keyword
- DOI
- ISBN
- ISBN-10
- ISSN
- EISSN
- Issue
- Volume
- References
- Conference Volume
- Paper No
NARROW
Format
Journal
Article Type
Conference Series
Subject Area
Topics
Date
Availability
1-5 of 5
Ayyoub Mehdizadeh Momen
Close
Follow your search
Access your saved searches in your account
Would you like to receive an alert when new items match your search?
Sort by
Journal Articles
Ali J. Chamkha, Yit Fatt Yap, Cheng-Xian (Charlie) Lin, Gerard F. “Jerry” Jones, Ayyoub Mehdizadeh Momen, T. S. Ravigururajan, Sujoy Kumar Saha
Article Type: Guest Editorial
J. Thermal Sci. Eng. Appl. August 2019, 11(4): 040301.
Paper No: TSEA-19-1321
Published Online: July 22, 2019
Journal Articles
Viral K. Patel, Frederick Kyle Reed, Roger Kisner, Chang Peng, Saeed Moghaddam, Ayyoub Mehdizadeh Momen
Article Type: Research-Article
J. Thermal Sci. Eng. Appl. April 2019, 11(2): 021008.
Paper No: TSEA-18-1308
Published Online: November 5, 2018
Abstract
Fabric drying is an energy-intensive process, which generally involves blowing hot dry air across tumbling wet fabric to facilitate evaporation and moisture removal. Most of the energy supplied is used to overcome the enthalpy of vaporization for water. Although this process tends to be inefficient, it is fairly simple and forms the basis for the majority of existing clothes dryer technology today. To address the relatively low efficiency, a new method of drying called “direct contact ultrasonic fabric drying” is proposed. The process involves using high-frequency vibration introduced by piezoelectric transducers, which are in contact with wet fabric. The vibration is used to extract water droplets from the fabric mechanically. In this study, a total of 24 individual transducers are used in a module to dry a 142 cm 2 sized fabric. The performance characterization of this single module has enabled successful scale-up of the system to a midscale prototype dryer, which can be used to ultrasonically dry clothing-sized fabric (∼750 cm 2 ). The first-generation ultrasonic fabric dryer fabricated uses as little as 17% of the energy needed by traditional evaporation-based drying techniques. In addition to experimental data, this paper presents the results of a kinetic and scaling analysis that provides some important insights into ultrasonic drying.
Proceedings Papers
Proc. ASME. InterPACK2017, ASME 2017 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems, V001T04A007, August 29–September 1, 2017
Paper No: IPACK2017-74147
Abstract
Creating a large surface area from a packed bed of particles is a necessary step for many packing, chemical, and heat transfer applications. However, the excessive pressure drop across the packed bed is not desirable in many of these applications. This problem can be addressed by using microchannels instead of the packed bed of particles, providing a high heat transfer rate at the acceptable pressure drop range. Microchannels offer a reduced amount of pressure drop due to their ability to introduce a low resistance flow passage while still providing the large surface area for heat and mass transfer. In this study, a magnetic stabilization process was developed to fabricate microchannels from the fine ferrite particles. The experimental hydrodynamic performance evaluation of such structures is described in this paper. This unique microchannel fabrication method can significantly improve thermal and hydrodynamic performance, while providing additional flexibility to control the porosity of the packed bed of particles.
Proceedings Papers
Proc. ASME. IMECE2015, Volume 2A: Advanced Manufacturing, V02AT02A019, November 13–19, 2015
Paper No: IMECE2015-53428
Abstract
Developing high-resolution 3D printed metallic microchannels is a challenge especially when there is an essential need for high packing density of the primary metal. While high packing density could be achieved by heating the structure to the sintering temperature, some heat sensitive applications require other strategies to improve the packing density of primary metal. In this study the goal is to develop microchannels with high green (bound) or pack densities on the scale of 100–300 microns which have a robust mechanical structure. Binder-jet 3D printing is an additive manufacturing process in which droplets of binder are deposited via inkjet into a bed of powder. By repeatedly spreading thin layers of powder and depositing binder into the appropriate 2D profiles, complex 3D objects can be created one layer at time. Microchannels with features on the order of 500 microns were fabricated via binder jetting of steel powder and then sintered and/or infiltrated with a secondary material. The droplet volume of the inkjet-deposited binder was varied along with the print orientation. The resolution of the process, the subsequent features sizes of the microchannels, and the overall microchannel quality were studied as a function of droplet volume, orientation, and infiltration level.
Proceedings Papers
Proc. ASME. IMECE2014, Volume 14: Emerging Technologies; Engineering Management, Safety, Ethics, Society, and Education; Materials: Genetics to Structures, V014T06A004, November 14–20, 2014
Paper No: IMECE2014-38928
Abstract
While there have been extensive studies on thermofluid characteristics of different magnetocaloric refrigeration systems, a conclusive optimization study using non-dimensional parameters which can be applied to a generic system has not been reported yet. In this study, a numerical model has been developed for optimization of active magnetic refrigerator (AMR). This model is computationally efficient and robust, making it appropriate for running the thousands of simulations required for parametric study and optimization. The governing equations have been non-dimensionalized and numerically solved using finite difference method. A parametric study on a wide range of non-dimensional numbers has been performed. While the goal of AMR systems is to improve the performance of competitive parameters including COP, cooling capacity and temperature span, new parameters called “AMR performance index-1” have been introduced in order to perform multi objective optimization and simultaneously exploit all these parameters. The multi-objective optimization is carried out for a wide range of the non-dimensional parameters. The results of this study will provide general guidelines for designing high performance AMR systems.