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Article: Theoretical study on dynamic process of conical bubble sonoluminescence
Title | Theoretical study on dynamic process of conical bubble sonoluminescence 圓錐泡聲致發光氣泡動力學過程的理論分析 |
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Authors | |
Keywords | Adiabatic Collapse (絕熱壓縮) Conical Bubble Sonoluminescence (圓錐泡聲致發光) Pressure (壓強) Radius Of Collapsing Bubble (壓縮半徑) Velocity Of Collapsing Bubble (塌陷速度方程) |
Issue Date | 2007 |
Publisher | Science Press (科學出版社) |
Citation | Chinese Journal Of Theoretical And Applied Mechanics, 2007, v. 39 n. 6, p. 727-731 How to Cite? 力學學報, 2007, v. 39 n. 6, p. 727-731 How to Cite? |
Abstract | The dynamic process of conical bubble sonoluminescence is discussed based on the adiabatic process. The equations for the velocity of bubble collapse, the pressure and temperature within the bubble are derived. Results show that the velocity of collapsing bubble increases with the decrease of the radius of collapsing bubble first in an approximately linear manner, then the maximal velocity of collapsing bubble is reached, subsequently, the velocity of collapsing bubble quickly decreases. Assuming that the initial pressure is equal to 1000 Pa, the maximal value of the velocity of bubble collapse is 5.8 m/s, the minimum radius of the bubble is 1.37 cm, then the huge pressure of 4.5 × 10 5 Pa, the collapsing temperature of above 37000 K, and the maximal energy of about 0.02 J can be achieved. The equations obtained in this paper could explain the phenomena of experiment. Finally, results show that the initial pressure within the bubble has important effects on the final extreme conditions. 在絕熱壓縮模型的基礎上,詳細討論了圓錐泡聲致發光中氣泡運動的動力學過程,得到了氣泡塌陷速度方程、氣泡內壓強方程以及溫度方程.結果顯示在氣泡進入圓錐腔的初始階段,氣泡的塌陷速度隨著壓縮半徑的不斷減小近似線性地增加;然后隨著壓縮半徑的進一步減小,氣泡塌陷的加速度逐漸減小;當氣泡塌陷速度達到最大值后,隨著氣泡壓縮半徑的進一步減小,塌陷速度迅速下降至零.在假設初始氣壓為1000Pa的基礎上,理論分析得到氣泡的最高塌陷速度可以達到5.8m/s;氣泡的最小壓縮半徑可以達到1.37cm,相應的氣泡內極限壓強超過4.5×10~5Pa,極限溫度超過3150K,而液流能夠提供給氣泡的能量達到0.02J.理論推導得到的結果可以比較好地用來解釋實驗中的現象.最后分析得到氣泡內的初始氣壓對氣泡所能達到的極端條件有著重要的影響. |
Persistent Identifier | http://hdl.handle.net/10722/168270 |
ISSN | 2023 SCImago Journal Rankings: 0.311 |
References |
DC Field | Value | Language |
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dc.contributor.author | He, S | en_US |
dc.contributor.author | Ha, J | en_US |
dc.contributor.author | Li, X | en_US |
dc.contributor.author | Li, Q | en_US |
dc.contributor.author | Wang, L | en_US |
dc.date.accessioned | 2012-10-08T03:16:53Z | - |
dc.date.available | 2012-10-08T03:16:53Z | - |
dc.date.issued | 2007 | en_US |
dc.identifier.citation | Chinese Journal Of Theoretical And Applied Mechanics, 2007, v. 39 n. 6, p. 727-731 | en_US |
dc.identifier.citation | 力學學報, 2007, v. 39 n. 6, p. 727-731 | - |
dc.identifier.issn | 0459-1879 | en_US |
dc.identifier.uri | http://hdl.handle.net/10722/168270 | - |
dc.description.abstract | The dynamic process of conical bubble sonoluminescence is discussed based on the adiabatic process. The equations for the velocity of bubble collapse, the pressure and temperature within the bubble are derived. Results show that the velocity of collapsing bubble increases with the decrease of the radius of collapsing bubble first in an approximately linear manner, then the maximal velocity of collapsing bubble is reached, subsequently, the velocity of collapsing bubble quickly decreases. Assuming that the initial pressure is equal to 1000 Pa, the maximal value of the velocity of bubble collapse is 5.8 m/s, the minimum radius of the bubble is 1.37 cm, then the huge pressure of 4.5 × 10 5 Pa, the collapsing temperature of above 37000 K, and the maximal energy of about 0.02 J can be achieved. The equations obtained in this paper could explain the phenomena of experiment. Finally, results show that the initial pressure within the bubble has important effects on the final extreme conditions. | en_US |
dc.description.abstract | 在絕熱壓縮模型的基礎上,詳細討論了圓錐泡聲致發光中氣泡運動的動力學過程,得到了氣泡塌陷速度方程、氣泡內壓強方程以及溫度方程.結果顯示在氣泡進入圓錐腔的初始階段,氣泡的塌陷速度隨著壓縮半徑的不斷減小近似線性地增加;然后隨著壓縮半徑的進一步減小,氣泡塌陷的加速度逐漸減小;當氣泡塌陷速度達到最大值后,隨著氣泡壓縮半徑的進一步減小,塌陷速度迅速下降至零.在假設初始氣壓為1000Pa的基礎上,理論分析得到氣泡的最高塌陷速度可以達到5.8m/s;氣泡的最小壓縮半徑可以達到1.37cm,相應的氣泡內極限壓強超過4.5×10~5Pa,極限溫度超過3150K,而液流能夠提供給氣泡的能量達到0.02J.理論推導得到的結果可以比較好地用來解釋實驗中的現象.最后分析得到氣泡內的初始氣壓對氣泡所能達到的極端條件有著重要的影響. | - |
dc.language | eng | en_US |
dc.publisher | Science Press (科學出版社) | - |
dc.relation.ispartof | Chinese Journal of Theoretical and Applied Mechanics | en_US |
dc.relation.ispartof | 力學學報 | - |
dc.subject | Adiabatic Collapse (絕熱壓縮) | en_US |
dc.subject | Conical Bubble Sonoluminescence (圓錐泡聲致發光) | en_US |
dc.subject | Pressure (壓強) | en_US |
dc.subject | Radius Of Collapsing Bubble (壓縮半徑) | en_US |
dc.subject | Velocity Of Collapsing Bubble (塌陷速度方程) | en_US |
dc.title | Theoretical study on dynamic process of conical bubble sonoluminescence | en_US |
dc.title | 圓錐泡聲致發光氣泡動力學過程的理論分析 | - |
dc.type | Article | en_US |
dc.identifier.email | Li, X:xuechenl@hku.hk | en_US |
dc.identifier.authority | Li, X=rp00742 | en_US |
dc.description.nature | link_to_subscribed_fulltext | en_US |
dc.identifier.scopus | eid_2-s2.0-37349030765 | en_US |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-37349030765&selection=ref&src=s&origin=recordpage | en_US |
dc.identifier.volume | 39 | en_US |
dc.identifier.issue | 6 | en_US |
dc.identifier.spage | 727 | en_US |
dc.identifier.epage | 731 | en_US |
dc.identifier.scopusauthorid | He, S=7402691230 | en_US |
dc.identifier.scopusauthorid | Ha, J=7202103285 | en_US |
dc.identifier.scopusauthorid | Li, X=24168958800 | en_US |
dc.identifier.scopusauthorid | Li, Q=7405861869 | en_US |
dc.identifier.scopusauthorid | Wang, L=7409124261 | en_US |
dc.customcontrol.immutable | csl 130805 | - |
dc.identifier.issnl | 0459-1879 | - |