MODELING OF DROPLET DYNAMIC AND THERMAL HISTORIES DURING SPRAY FORMING .3. ANALYSIS OF SPRAY SOLID FRACTION
The complex equations governing droplet dynamic and thermal behaviour during spray forming have been analysed to give an approximate expression for the spray solid fraction as a function of the process parameters of the form fS = a1 + a2 Δ T + a3 frac(υg i z2 / 3, over(M, ̇)1 / 2) where vgi is the i...
| Huvudupphovsmän: | , |
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| Materialtyp: | Journal article |
| Språk: | English |
| Publicerad: |
1995
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| _version_ | 1826271108500815872 |
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| author | Grant, P Cantor, B |
| author_facet | Grant, P Cantor, B |
| author_sort | Grant, P |
| collection | OXFORD |
| description | The complex equations governing droplet dynamic and thermal behaviour during spray forming have been analysed to give an approximate expression for the spray solid fraction as a function of the process parameters of the form fS = a1 + a2 Δ T + a3 frac(υg i z2 / 3, over(M, ̇)1 / 2) where vgi is the initial gas velocity at atomisation, Ṁ is the molten alloy mass flow rate, ΔT is the molten alloy super heat above the liquidus, and z is the axial distance. This expression provides an extremely convenient relationship to indicate the variation of spray solid fraction during spray forming, which is a key variable controlling final as sprayed billet microstructure. Predicted N2 atomised Al-4 wt%Cu spray solid fractions based upon the analytical expression have been compared with equivalent results obtained from a detailed computer model described previously in Parts I and II under a wide range of conditions of vgi, Ṁ, ΔT and z and gave good agreement. Best-fit values of a1, a2 and a3 were 1.9 × 10-1, -1.4 × 10-3 and 1.3 × 10-3 respectively, in good agreement with predicted values. © 1995 Elsevier Science Ltd. |
| first_indexed | 2024-03-06T21:51:26Z |
| format | Journal article |
| id | oxford-uuid:4b682eac-cf7b-42e2-a37c-9314210d1c6a |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T21:51:26Z |
| publishDate | 1995 |
| record_format | dspace |
| spelling | oxford-uuid:4b682eac-cf7b-42e2-a37c-9314210d1c6a2022-03-26T15:43:21ZMODELING OF DROPLET DYNAMIC AND THERMAL HISTORIES DURING SPRAY FORMING .3. ANALYSIS OF SPRAY SOLID FRACTIONJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:4b682eac-cf7b-42e2-a37c-9314210d1c6aEnglishSymplectic Elements at Oxford1995Grant, PCantor, BThe complex equations governing droplet dynamic and thermal behaviour during spray forming have been analysed to give an approximate expression for the spray solid fraction as a function of the process parameters of the form fS = a1 + a2 Δ T + a3 frac(υg i z2 / 3, over(M, ̇)1 / 2) where vgi is the initial gas velocity at atomisation, Ṁ is the molten alloy mass flow rate, ΔT is the molten alloy super heat above the liquidus, and z is the axial distance. This expression provides an extremely convenient relationship to indicate the variation of spray solid fraction during spray forming, which is a key variable controlling final as sprayed billet microstructure. Predicted N2 atomised Al-4 wt%Cu spray solid fractions based upon the analytical expression have been compared with equivalent results obtained from a detailed computer model described previously in Parts I and II under a wide range of conditions of vgi, Ṁ, ΔT and z and gave good agreement. Best-fit values of a1, a2 and a3 were 1.9 × 10-1, -1.4 × 10-3 and 1.3 × 10-3 respectively, in good agreement with predicted values. © 1995 Elsevier Science Ltd. |
| spellingShingle | Grant, P Cantor, B MODELING OF DROPLET DYNAMIC AND THERMAL HISTORIES DURING SPRAY FORMING .3. ANALYSIS OF SPRAY SOLID FRACTION |
| title | MODELING OF DROPLET DYNAMIC AND THERMAL HISTORIES DURING SPRAY FORMING .3. ANALYSIS OF SPRAY SOLID FRACTION |
| title_full | MODELING OF DROPLET DYNAMIC AND THERMAL HISTORIES DURING SPRAY FORMING .3. ANALYSIS OF SPRAY SOLID FRACTION |
| title_fullStr | MODELING OF DROPLET DYNAMIC AND THERMAL HISTORIES DURING SPRAY FORMING .3. ANALYSIS OF SPRAY SOLID FRACTION |
| title_full_unstemmed | MODELING OF DROPLET DYNAMIC AND THERMAL HISTORIES DURING SPRAY FORMING .3. ANALYSIS OF SPRAY SOLID FRACTION |
| title_short | MODELING OF DROPLET DYNAMIC AND THERMAL HISTORIES DURING SPRAY FORMING .3. ANALYSIS OF SPRAY SOLID FRACTION |
| title_sort | modeling of droplet dynamic and thermal histories during spray forming 3 analysis of spray solid fraction |
| work_keys_str_mv | AT grantp modelingofdropletdynamicandthermalhistoriesduringsprayforming3analysisofspraysolidfraction AT cantorb modelingofdropletdynamicandthermalhistoriesduringsprayforming3analysisofspraysolidfraction |