磁流變液在泡沫金屬內(nèi)部流動狀態(tài)的數(shù)值分析
發(fā)布時間:2018-08-25 09:46
【摘要】:為研究磁流變液在泡沫金屬中的流動狀態(tài),基于磁流體動力學(xué)及麥克斯韋方程,建立磁流變液在泡沫金屬中流動的控制方程,并利用流體動力學(xué)仿真軟件Fluent,模擬仿真磁流變液在多孔泡沫金屬中的流動,得到壓強(qiáng)和速度分布。結(jié)果表明:在流動區(qū)域內(nèi),磁場強(qiáng)度越大,層流越明顯;磁場強(qiáng)度越大,由于泡沫金屬復(fù)雜網(wǎng)狀結(jié)構(gòu)的影響,垂直于流動方向的速度逐漸減小,但由于磁場強(qiáng)度的變化而改變的速度值并不明顯;即使對磁流變液施加垂直于流動方向的磁場,磁流變液也能夠通過泡沫金屬區(qū)域;隨著磁場強(qiáng)度的增加,磁流變液的動態(tài)壓強(qiáng)呈減小的趨勢,而靜態(tài)壓強(qiáng)逐漸增大。
[Abstract]:In order to study the flow state of magnetorheological fluid in foam metal, the governing equation of magnetorheological fluid flow in foam metal was established based on magnetohydrodynamics and Maxwell equation. The fluid dynamics simulation software Fluent, was used to simulate the flow of magnetorheological fluid in porous metal foam, and the pressure and velocity distribution were obtained. The results show that the greater the magnetic field intensity, the more obvious the laminar flow, and the greater the magnetic field intensity, the smaller the velocity perpendicular to the flow direction due to the influence of the complex network structure of foam metal. However, the velocity change due to the change of magnetic field intensity is not obvious. Even if the magnetic field perpendicular to the flow direction is applied to the magnetorheological fluid, the magnetorheological fluid can still pass through the foam metal region; with the increase of the magnetic field intensity, The dynamic pressure of the magnetorheological fluid decreases, while the static pressure increases.
【作者單位】: 重慶工商大學(xué)檢測控制集成系統(tǒng)重慶市工程實(shí)驗(yàn)室;重慶工商大學(xué)裝備系統(tǒng)服役健康保障國際聯(lián)合研究中心;
【基金】:國家自然科學(xué)基金項(xiàng)目(51375517) 裝備系統(tǒng)服役健康保障國際聯(lián)合研究中心開放基金項(xiàng)目(KFJJ201501001)
【分類號】:TB383.4
[Abstract]:In order to study the flow state of magnetorheological fluid in foam metal, the governing equation of magnetorheological fluid flow in foam metal was established based on magnetohydrodynamics and Maxwell equation. The fluid dynamics simulation software Fluent, was used to simulate the flow of magnetorheological fluid in porous metal foam, and the pressure and velocity distribution were obtained. The results show that the greater the magnetic field intensity, the more obvious the laminar flow, and the greater the magnetic field intensity, the smaller the velocity perpendicular to the flow direction due to the influence of the complex network structure of foam metal. However, the velocity change due to the change of magnetic field intensity is not obvious. Even if the magnetic field perpendicular to the flow direction is applied to the magnetorheological fluid, the magnetorheological fluid can still pass through the foam metal region; with the increase of the magnetic field intensity, The dynamic pressure of the magnetorheological fluid decreases, while the static pressure increases.
【作者單位】: 重慶工商大學(xué)檢測控制集成系統(tǒng)重慶市工程實(shí)驗(yàn)室;重慶工商大學(xué)裝備系統(tǒng)服役健康保障國際聯(lián)合研究中心;
【基金】:國家自然科學(xué)基金項(xiàng)目(51375517) 裝備系統(tǒng)服役健康保障國際聯(lián)合研究中心開放基金項(xiàng)目(KFJJ201501001)
【分類號】:TB383.4
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