Sidewall effects and sand trap efficiency in a large wind tunnel

机译：大型风洞中的侧壁效应和沙坑效率

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Abstract >Aeolian sand transport is a widespread physical phenomenon on the surface of Earth, as well as on Mars and Titan. Accurate measurements of the components of the transport system are necessary if we are to understand the nature of the physical processes. Sand traps are typically used to measure sediment transport rates, and issues associated with the sampling efficiency of traps and the development of reliable traps have received considerable attention in recent decades. In this study, we measured aeolian transport rate at five distances from a wind tunnel sidewall using a vertically‐segmented sand trap. Total transport rates were determined by weighing the bed sediment before and after each experiment, and with and without a trap installed. The following results were obtained: (1) sand transport increased linearly with the distance away from the sidewall, and the appropriate location to measure maximum transport is within the central 20% of the wind tunnel; (2) current methods overestimate the sampling efficiency of sand traps when comparing trap data to transport rate data obtained by weighing sand moved through the entire tunnel because the effects of the sidewalls in decreasing total transport are neglected; (3) the efficiency of the vertically‐segmented trap that we tested ranged from 11.57% to 31.68% using our revised methods, whereas standard methods caused efficiency to be overestimated by 32–72% of the efficiency; (4) using either method, the efficiency of the trap increased exponentially with shear velocity for the range we used. Copyright ? 2017 John Wiley & Sons, Ltd. </abstract> </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> <div class="translation abstracttxt"> <span class="zhankaihshouqi fivelineshidden" id="abstract"> <span>机译：</span><abstract xmlns =“http://www.wiley.com/namespaces/wiley”type =“main”xml：lang =“en”> <title type =“main”>抽象</ title> >风沙运输是地球表面的普遍存在现象，以及火星和泰坦。如果我们要理解物理过程的性质，则需要精确测量运输系统的组件。砂阱通常用于测量沉积物运输速率，并且近几十年来，与陷阱的采样效率和可靠陷阱的发展相关的问题得到了相当大的关注。在这项研究中，我们使用垂直分段的砂阱从风隧道侧壁的五个距离测量了天空运输速率。通过在每个实验之前和之后称量床沉积物，并且没有安装陷阱，通过称重床沉积来确定总运输速率。获得以下结果：（1）砂传输线性增加，远离侧壁的距离，测量最大运输的适当位置是风洞的中心20％; （2）电流方法高估喷砂陷阱的采样效率，当陷阱数据与通过整个隧道移动的称重砂移动时的运输速率数据，因为侧壁在总运输中的效果被忽略; （3）我们测试的垂直细分陷阱的效率从我们修订的方法从11.57％到31.68％，而标准方法导致效率高估32-72％的效率; （4）使用任一方法，陷阱的效率随着我们使用的范围的剪切速度指数增加。版权？ 2017年John Wiley＆amp; SONS，LTD。</ p> </ abstract> </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> </div> <div class="record"> <h2 class="all_title" id="enpatent33" >著录项</h2> <ul> <li> <span class="lefttit">来源</span> <div style="width: 86%;vertical-align: text-top;display: inline-block;"> <a href='/journal-foreign-22319/'>《Earth Surface Processes and Landforms: The journal of the British Geomorphological Research Group》</a> <b style="margin: 0 2px;">|</b><span>2018年第6期</span><b style="margin: 0 2px;">|</b><span>共7页</span> </div> </li> <li> <div class="author"> <span class="lefttit">作者</span> <p id="fAuthorthree" class="threelineshidden zhankaihshouqi"> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Hong Cheng&option=202" target="_blank" rel="nofollow">Hong Cheng;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Yi Fang&option=202" target="_blank" rel="nofollow">Yi Fang;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Sherman Douglas J.&option=202" target="_blank" rel="nofollow">Sherman Douglas J.;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Chenchen Liu&option=202" target="_blank" rel="nofollow">Chenchen Liu;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Xueyong Zou&option=202" target="_blank" rel="nofollow">Xueyong Zou;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Kaidi Zhang&option=202" target="_blank" rel="nofollow">Kaidi Zhang;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Liqiang Kang&option=202" target="_blank" rel="nofollow">Liqiang Kang;</a> </p> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zkzz" style="display: none;">展开▼</span> </div> </li> <li> <div style="display: flex;"> <span class="lefttit">作者单位</span> <div style="position: relative;margin-left: 3px;max-width: 639px;"> <div class="threelineshidden zhankaihshouqi" id="fOrgthree"> <p>State Key Laboratory of Earth Surface Processes and Resource Ecology MOE Engineering Center of Desertification and Blown‐sand Control Faculty of Geographical ScienceBeijing Normal UniversityBeijing P. R. China;</p> <p>State Key Laboratory of Earth Surface Processes and Resource Ecology MOE Engineering Center of Desertification and Blown‐sand Control Faculty of Geographical ScienceBeijing Normal UniversityBeijing P. R. China;</p> <p>Department of GeographyUniversity of AlabamaTuscaloosa AL USA;</p> <p>State Key Laboratory of Earth Surface Processes and Resource Ecology MOE Engineering Center of Desertification and Blown‐sand Control Faculty of Geographical ScienceBeijing Normal UniversityBeijing P. R. China;</p> <p>State Key Laboratory of Earth Surface Processes and Resource Ecology MOE Engineering Center of Desertification and Blown‐sand Control Faculty of Geographical ScienceBeijing Normal UniversityBeijing P. R. China;</p> <p>State Key Laboratory of Earth Surface Processes and Resource Ecology MOE Engineering Center of Desertification and Blown‐sand Control Faculty of Geographical ScienceBeijing Normal UniversityBeijing P. R. China;</p> <p>State Key Laboratory of Earth Surface Processes and Resource Ecology MOE Engineering Center of Desertification and Blown‐sand Control Faculty of Geographical ScienceBeijing Normal UniversityBeijing P. R. China;</p> </div> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zhdw" style="display: none;">展开▼</span> </div> </div> </li> <li > <span class="lefttit">收录信息</span> <span style="width: 86%;vertical-align: text-top;display: inline-block;"></span> </li> <li> <span class="lefttit">原文格式</span> <span>PDF</span> </li> <li> <span class="lefttit">正文语种</span> <span>eng</span> </li> <li> <span class="lefttit">中图分类</span> <span><a href="https://www.zhangqiaokeyan.com/clc/163.html" title="地球物理学">地球物理学;</a></span> </li> <li class="antistop"> <span class="lefttit">关键词</span> <p style="width: 86%;vertical-align: text-top;"> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=sand transport&option=203" rel="nofollow">sand transport;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=wind tunnel calibration&option=203" rel="nofollow">wind tunnel calibration;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=vertically‐segmented trap&option=203" rel="nofollow">vertically‐segmented trap;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=centerline of wind tunnel&option=203" rel="nofollow">centerline of wind tunnel;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=shear velocity&option=203" rel="nofollow">shear velocity;</a> </p> <div class="translation"> 机译：沙运输;风隧道校准;垂直分割陷阱;风洞的中心线;剪切速度; </div> </li> </ul> </div> </div> <div class="literature cardcommon"> <div class="similarity "> <h3 class="all_title" id="enpatent66">相似文献</h3> <div class="similaritytab clearfix"> <ul> <li class="active" >外文文献</li> <li >中文文献</li> <li >专利</li> </ul> </div> <div class="similarity_details"> <ul > <li> <div> <b>1. </b><a class="enjiyixqcontent" href="/journal-foreign-detail/0704023139243.html">Sidewall effects and sand trap efficiency in a large wind tunnel</a> <b>[J]</b> 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H.,</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Sato, M.&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Sato, M.,</a> <span>1991</span> </span> </div> <p class="zwjiyix translation" style="max-width: initial;height: auto;word-break: break-all;white-space: initial;text-overflow: initial;overflow: initial;"> <span>机译：Nal二维跨音速风洞中NaCa0012翼型数据校正侧壁边界层效应</span> </p> </li> </ul> <ul style="display: none;"> <li> <div> <b>1. </b><a class="enjiyixqcontent" href="/academic-journal-cn_pneumatic-research-experiment_thesis/0201263365043.html">二元风洞中的侧壁边界层堵塞效应</a> <b>[J]</b> <span> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=程克明&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor"> . 程克明</a> <span> <a href="/journal-cn-40312/" target="_blank" rel="nofollow" class="tuijian_authcolor"> . 气动研究与实验 </a> </span> <span> . 1996</span><span>,第004期</span> </span> </div> </li> <li> <div> <b>2. </b><a 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