Please wait, while we are loading the content...
| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Moeller, T. Rhodes, R. Keefer, D. Merkle, C. Li, D. |
| Copyright Year | 2006 |
| Description | Author affiliation: Tennessee Univ. Space Inst., Tullahoma, TN (Moeller, T.; Rhodes, R.; Keefer, D.) |
| Abstract | Summary form only given. The present abstract describes an on-going effort to provide detailed experimental diagnostics and advanced computational simulations of the behavior and performance of high power plasma thrusters for possible applications in nuclear electric propulsion systems. Electromagnetic acceleration of plasmas for propulsion has long been seen as a means to efficient high specific impulse systems. Our approach is to evaluate simulations results from advanced computational codes with data collected from a laboratory prototype thruster that is designed for accurate diagnostics. The thruster is a coaxial electrode design that discharges plasma through a section of vacuum chamber with flat quartz windows that are used for optical diagnostics. High speed photography has documented successful firing of the thruster, a heterodyne laser interferometer has been used to obtain line-of-site electron number densities near the thruster exit, and Rogowski coils have been utilized to monitor thruster current. Tests with an array of B-dot probes positioned to help characterize the thruster current sheet have commenced. The supporting simulations are being obtained from two computer codes, MACH2 and GEMS. MACH2 is a well-established MHD code based upon the ALE formulation. It has been applied to diverse problems, and its capabilities are well recognized. For the present problem, however, it has several limitations: it is a 2-D code; its grid capabilities are limited to quadrilaterals; and its architecture does not lend itself to parallel computation. Of primary importance in the present application is MACH2's restriction to the MHD approximation, disallowing magnetic field propagation by wave processes. Therefore, we are extending the electromagnetics capability of the three-dimensional general equations mesh solver (GEMS) code that has been previously used to simulate a steady-state MHD generator to provide a time accurate simulation capability that incorporates modern computational methods. This extension has focused on identifying methods for solving coupled electromagnetic/fluid dynamic problems in regions where the MHD approximation fails. We have developed a solution algorithm that does not depend upon the MHD approximation, but solves the complete Maxwell equations at resource levels that appear to be similar to those associated with the magnetic induction equation. Comparisons between results from the present tests and those obtained from MACH2 and GEMS are expected to be available for ICOPS |
| Sponsorship | Plasma Sci. and Applications Comm. IEEE Nuclear and Plasma Sci. Soc |
| Starting Page | 91 |
| Ending Page | 91 |
| File Size | 191403 |
| Page Count | 1 |
| File Format | |
| ISBN | 1424401259 |
| DOI | 10.1109/PLASMA.2006.1706963 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2006-06-04 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Computer simulation Plasma accelerators Computational modeling Magnetohydrodynamics Plasma simulation Plasma diagnostics Plasma applications Electromagnetic launching Optical interferometry Testing |
| Content Type | Text |
| Resource Type | Article |
National Digital Library of India (NDLI) is a virtual repository of learning resources which is not just a repository with search/browse facilities but provides a host of services for the learner community. It is sponsored and mentored by Ministry of Education, Government of India, through its National Mission on Education through Information and Communication Technology (NMEICT). Filtered and federated searching is employed to facilitate focused searching so that learners can find the right resource with least effort and in minimum time. NDLI provides user group-specific services such as Examination Preparatory for School and College students and job aspirants. Services for Researchers and general learners are also provided. NDLI is designed to hold content of any language and provides interface support for 10 most widely used Indian languages. It is built to provide support for all academic levels including researchers and life-long learners, all disciplines, all popular forms of access devices and differently-abled learners. It is designed to enable people to learn and prepare from best practices from all over the world and to facilitate researchers to perform inter-linked exploration from multiple sources. It is developed, operated and maintained from Indian Institute of Technology Kharagpur.
Learn more about this project from here.
NDLI is a conglomeration of freely available or institutionally contributed or donated or publisher managed contents. Almost all these contents are hosted and accessed from respective sources. The responsibility for authenticity, relevance, completeness, accuracy, reliability and suitability of these contents rests with the respective organization and NDLI has no responsibility or liability for these. Every effort is made to keep the NDLI portal up and running smoothly unless there are some unavoidable technical issues.
Ministry of Education, through its National Mission on Education through Information and Communication Technology (NMEICT), has sponsored and funded the National Digital Library of India (NDLI) project.
| Sl. | Authority | Responsibilities | Communication Details |
|---|---|---|---|
| 1 | Ministry of Education (GoI), Department of Higher Education |
Sanctioning Authority | https://www.education.gov.in/ict-initiatives |
| 2 | Indian Institute of Technology Kharagpur | Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project | https://www.iitkgp.ac.in |
| 3 | National Digital Library of India Office, Indian Institute of Technology Kharagpur | The administrative and infrastructural headquarters of the project | Dr. B. Sutradhar bsutra@ndl.gov.in |
| 4 | Project PI / Joint PI | Principal Investigator and Joint Principal Investigators of the project |
Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon |
| 5 | Website/Portal (Helpdesk) | Queries regarding NDLI and its services | support@ndl.gov.in |
| 6 | Contents and Copyright Issues | Queries related to content curation and copyright issues | content@ndl.gov.in |
| 7 | National Digital Library of India Club (NDLI Club) | Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach | clubsupport@ndl.gov.in |
| 8 | Digital Preservation Centre (DPC) | Assistance with digitizing and archiving copyright-free printed books | dpc@ndl.gov.in |
| 9 | IDR Setup or Support | Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops | idr@ndl.gov.in |
|
Loading...
|