| contributor author | Andrea E. Senior | |
| contributor author | Ph.D student | |
| contributor author | Xin Zhang | |
| contributor author | Professor in Aerodynamics | |
| date accessioned | 2017-05-09T00:05:17Z | |
| date available | 2017-05-09T00:05:17Z | |
| date copyright | March, 2001 | |
| date issued | 2001 | |
| identifier issn | 0098-2202 | |
| identifier other | JFEGA4-27160#105_1.pdf | |
| identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/125464 | |
| description abstract | The force and pressure behavior of a generic diffuser in ground effect were investigated. The diffuser model is a bluff body with a rear diffuser at 17 deg to the horizontal, and side-plates. Measurements were conducted in a low speed wind tunnel equipped with a moving ground facility. Techniques employed were force balance, pressure taps, and surface flow visualization. The diffuser flow in ground effect was characterized by vortex flow and three-dimensional flow separation. Four types of force behavior were observed: (a) down-force enhancement at high ride heights characterized by an attached symmetric diffuser flow, (b) maximum down-force at moderate ride heights characterized by a symmetric diffuser flow and separation on the diffuser ramp surface, (c) down-force reduction at low ride heights characterized by an asymmetric diffuser flow and flow separation, and (d) low down-force at very low ride heights, also characterized by an asymmetric diffuser flow and flow separation. The down-force reduction near the ground is attributed to flow separation at the diffuser inlet and subsequent loss of suction in the first half of the diffuser. | |
| publisher | The American Society of Mechanical Engineers (ASME) | |
| title | The Force and Pressure of a Diffuser-Equipped Bluff Body in Ground Effect | |
| type | Journal Paper | |
| journal volume | 123 | |
| journal issue | 1 | |
| journal title | Journal of Fluids Engineering | |
| identifier doi | 10.1115/1.1340637 | |
| journal fristpage | 105 | |
| journal lastpage | 111 | |
| identifier eissn | 1528-901X | |
| keywords | Force | |
| keywords | Pressure | |
| keywords | Flow (Dynamics) | |
| keywords | Diffusers | |
| keywords | Vortices | |
| keywords | Suction | |
| keywords | Separation (Technology) AND Flow visualization | |
| tree | Journal of Fluids Engineering:;2001:;volume( 123 ):;issue: 001 | |
| contenttype | Fulltext | |