维普中文期刊产品整合服务
3篇 您的检索式:作者名="Christian Scherer"
    题名 作者 年代 出处 被引量
1Intraoperative high resolution linear contrast enhanced ultrasound (IOUS) for detection of microvascularization of malignant liver lesions before surgery or radiofrequeny ablation显示文摘E.M. Jung Martin Loss Julia Schneider Wibke Uller P. Wiggermann Marcus N. Scherer Wolfgang Jung Hans J. Schlitt Christian Stroszczynski Ernst M. Jung 2012Clinical Hemorheology and Microcirculation (-)2012,,1:1
2Comparing two IBM implementations for the simulation of uniform packed beds显示文摘Nowadays,the design of fixed packed bed reactors still relies on empirical correlations,which,especially for small tube to particle diameter ratios,are mostly too inaccurate because of the presence of wall effects.Therefore,the simulation of fixed packed bed reactors plays an important role to predict and control the flow and process parameters in such,nowadays and in the future.Because of its straightforward applicability to non-uniform packings with particles of arbitrary shapes,the immersed boundary method(IBM)has advantages over other numerical methods and is used more and more frequently.This paper compares two approaches of IBMs for the simulation of fixed bed reactors with spherical shaped particles.The classic,smooth approach is compared to the straightforward to implement blocked-off method for velocity fields above the fixed bed for particle Reynolds numbers of 300 and 500.Results from experimental inline PIV-measurements of the reactor to be simulated serve as a basis for comparison.Very good agreement with the experiment is found for both simulation methodologies with higher resolutions,considering the more stable flow at a particle Reynolds number of 300.Differences in the different IBM approaches occurred for the more unsteady flow at a particle Reynolds number of 500.Compared to the blocked-off method,the smooth IBM reflects the formation of additional jets and recirculation zones better right above the bed,though increasing the fluid mesh resolution improves the accuracy of the blocked-off method.Overall,a more diffusive behaviour is found for the blocked-off simulations due to the stairstep representation,which is avoided by using interpolation stencils as in the smooth IBM.With higher mesh refinement in the blocked-off IBM this effect can be reduced,but this also increases the computational effort.Christian Gorges Maximilian Brommer Christin Velten Siegmar Wirtz Enric Illana Mahiques Viktor Scherer Katharina Zahringer Berend van Wachem 2024Particuology2024,86,3:0
3节能性与结构耐久性俱佳的新型暖边系统—Kodispace 4SG显示文摘本文介绍了一项创新性反应型丁基隔条技术。这项技术使采用结构装配的建筑外立面中的中空玻璃单元具备国际先进的暖边性能与优越的气密性。在极端的环境条件下,中空玻璃单元中的二道密封胶能够承受由于风荷载和极端温度而产生的高应力。为了适应上述应力,科技人员设计了一套反应型丁基系统,该系统融合了隔条、干燥剂与丁基密封胶的各项功能。相比于刚性隔条,这套隔条系统利用中空玻璃单元的整个内部空间来吸收由于环境应力引起的形变。该隔条与玻璃和第二道硅酮密封胶的化学粘合保证了封边条卓越的耐久性。由于在产品应用中采用电脑控制,再加上隔条的极低的渗透性,在正常大规模生产条件下,中空玻璃单元也能达到EN 1279-3(气密性)标准的要求。这就使三玻两腔的中空玻璃的制作变得尤为简单,更易于制作高精度的大板结构中空玻璃,造型设计也更加自由。创新的反应型隔条系统已成为中空玻璃单元技术领域的里程碑,为建筑外立面带来了卓越的耐久性和节能效果,使建筑外立面的能源可持续性迈出了辉煌的一步。Christian Scherer Ernst Semar Harald Becker Wolfgang Wittwer Jens Wolthaus Thomas Scherer 李晶 2018建设科技2018,,17:0
返回顶部 每页显示:
共1页 首页 上一页 第1页 下一页 末页 /1 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费