{"currentpage":1,"firstResult":0,"maxresult":10,"pagecode":5,"pageindex":{"endPagecode":5,"startPagecode":1},"records":[{"abstractinfo":"采用计算流体力学和颗粒离散元耦合的方法模拟了三维混合沙输运过程。采用体平均的Navier—stokes方程来描述气相运动,考虑了气相和颗粒相的相互作用。颗粒运动通过求解牛顿运动方程来求解,采用硬球模型描述颗粒和颗粒及颗粒和壁面的碰撞。本模型中,颗粒运动是三维的而气相运动是二维的。计算结果表明:总输沙率沿高度方向在大于2cm以上按照指数衰减,在2cm以下则偏大;各粒径颗粒具有不同的输沙率分布,粗粒径颗粒按指数规律衰减,其它粒径颗粒输沙率随高度先指数增加后减少;各粒径颗粒平均水平速度随高度对数函数增加且同高度时随粒径增大而减小,1cm高度以下则相反;沙粒平均粒径沿高度线性递减,2cm以下粒径偏大。","authors":[{"authorName":"肖锋军","id":"5c348e78-2198-4235-a1fa-f5373a1d0cf3","originalAuthorName":"肖锋军"},{"authorName":"郭烈锦","id":"52dbe052-95b1-432d-8f7b-8a1546d7e8c9","originalAuthorName":"郭烈锦"},{"authorName":"王跃社","id":"7e0eb7a8-109a-41fe-b23b-d0477c65ac5b","originalAuthorName":"王跃社"},{"authorName":"李德标","id":"d228a3e7-5c3a-4f6a-bc81-1e3967596a84","originalAuthorName":"李德标"}],"doi":"","fpage":"259","id":"a71f2ff9-8849-4b08-934a-b3f4849ba9f1","issue":"2","journal":{"abbrevTitle":"GCRWLXB","coverImgSrc":"journal/img/cover/GCRWLXB.jpg","id":"32","issnPpub":"0253-231X","publisherId":"GCRWLXB","title":"工程热物理学报 "},"keywords":[{"id":"a35e7c1f-69fc-4158-9462-98baa2b8d47a","keyword":"混合沙输运","originalKeyword":"混合沙输运"},{"id":"7fe5d1d9-e3e5-41d0-b6c1-0e6fdc7c9807","keyword":"输沙率","originalKeyword":"输沙率"},{"id":"8975e32b-1316-4792-8d3a-16fcf9ba4a61","keyword":"计算流体力学","originalKeyword":"计算流体力学"},{"id":"9c470f02-524e-4d48-8bd3-12466fc92edd","keyword":"硬球模型","originalKeyword":"硬球模型"}],"language":"zh","publisherId":"gcrwlxb201202020","title":"三维混合沙输运数值模拟","volume":"33","year":"2012"},{"abstractinfo":"本文在对风沙流进行气固两相流分析的基础上实现了低风速条件下的沙粒起动过程,借助PIV测量系统对其进行了观测并对影响因素进行了分析,获得了沙粒的浓度和速度分布.实验结果表明沙粒浓度沿距离沙面的高度呈负指数分布特征.流体起动和冲击起动下的输沙率随摩阻速度和雷诺数的增加而单调增加,而起动效能比随之减小并趋向于常数0.207.测量得到的输沙率修正了低速范围内的Bagnold公式和河村龙马公式.","authors":[{"authorName":"席兵","id":"04dbbba2-4e18-4884-aa71-c95b6ce2b3cd","originalAuthorName":"席兵"},{"authorName":"祁海鹰","id":"1f293736-03a1-471b-af0a-c708a509d3dc","originalAuthorName":"祁海鹰"},{"authorName":"由长福","id":"14f68fa3-7d8b-46b5-90a4-258e64aea47c","originalAuthorName":"由长福"},{"authorName":"程旭","id":"9a77912c-498f-4e2a-822a-1e4d386ad416","originalAuthorName":"程旭"},{"authorName":"徐旭常","id":"e21a15e8-dc8c-4f11-b566-0b43f6ca755b","originalAuthorName":"徐旭常"}],"doi":"","fpage":"805","id":"ff7f1811-e6dd-43ab-a2b0-9394f3a04b87","issue":"5","journal":{"abbrevTitle":"GCRWLXB","coverImgSrc":"journal/img/cover/GCRWLXB.jpg","id":"32","issnPpub":"0253-231X","publisherId":"GCRWLXB","title":"工程热物理学报 "},"keywords":[{"id":"3c769c00-88b8-40cb-a3ba-6ef5aa06e27a","keyword":"沙粒起动","originalKeyword":"沙粒起动"},{"id":"b8694e7b-7e88-470a-931d-5f3aff6b6c86","keyword":"输沙率","originalKeyword":"输沙率"},{"id":"026593c7-1323-4520-9b9f-f8f69054c63d","keyword":"起动效能比","originalKeyword":"起动效能比"},{"id":"84f660c0-aad7-49e2-9f1d-cddcb7dca114","keyword":"PIV","originalKeyword":"PIV"}],"language":"zh","publisherId":"gcrwlxb200505027","title":"低风速条件下沙粒起动的PIV研究","volume":"26","year":"2005"},{"abstractinfo":"为证实随粒度变细无因次渗透率变大是气测渗透率的特有规律,对粒度100~450 μm范围内的五种窄筛分水洗沙的渗透率进行了实验测量对比.实验结果表明,随粒度变细,气测无因次渗透率规律变大是固有的,是流动滑移增强的结果.平均粒度402.5 μm筛分沙形成的孔隙尺度不是受流动滑移影响的终结尺度.流动滑移影响远比认定的强,不限于Kn>10-3.同粒度范围内水测渗透率受流动滑移影响不明显,五种筛分沙的无因次渗透率-孔隙率数据几乎都落在曲线√K/d=0.283φ2.67的±4.1%以内.出人预料的是,不受流动滑移的水测渗透率并不比受流动滑移影响的气测渗透率低.平均粒度402.5 μm筛分沙的气测渗透率比水测渗透率低近46%,远大于渗透率,孔隙率测量误差之和.数表气体粘度系数包括流动滑移成分,数值偏低是可能的.","authors":[{"authorName":"雷树业","id":"5c3e1b81-69bb-4742-89cb-82130601e36c","originalAuthorName":"雷树业"},{"authorName":"郝锦志","id":"ba61c5f9-0c42-44ec-a2b8-6cb7d43a4e85","originalAuthorName":"郝锦志"},{"authorName":"安珍彩","id":"d16acf56-d6ab-49df-af34-d8b8ece2e11c","originalAuthorName":"安珍彩"}],"doi":"","fpage":"105","id":"2a70207a-a554-4187-9c16-0a88bd823aac","issue":"z2","journal":{"abbrevTitle":"GCRWLXB","coverImgSrc":"journal/img/cover/GCRWLXB.jpg","id":"32","issnPpub":"0253-231X","publisherId":"GCRWLXB","title":"工程热物理学报 "},"keywords":[{"id":"06efe3e1-3eec-44b6-a57c-ebbe11830291","keyword":"多孔介质","originalKeyword":"多孔介质"},{"id":"2f7be949-0566-46a2-af02-576a83fd5b43","keyword":"渗透率","originalKeyword":"渗透率"},{"id":"13d82151-cba9-4898-9a7e-0ee36069d7ae","keyword":"滑移效应","originalKeyword":"滑移效应"}],"language":"zh","publisherId":"gcrwlxb2006z2027","title":"窄筛分水洗沙的气测和水测渗透率实验","volume":"27","year":"2006"},{"abstractinfo":"为了研究土壤电阻率和阳极埋设方式对长输管线阴极保护电位分布的影响,建立了长输管线阴极保护的简单物理模型,利用边界元算法的管单元法建立相应的数学模型,采用Matlab编程进行模拟求解.首先设计试验验证模拟结果的正确性,然后分别设定了不等的电阻率以及不同的阳极埋设方式进行模拟计算.结果表明,不同的土壤电阻率和不同的阳极埋设方式均会对长输管线阴极保护电位的分布产生很大影响.","authors":[{"authorName":"李自力","id":"bf4095b2-519a-4b8e-ba3a-ec06ea987ed7","originalAuthorName":"李自力"},{"authorName":"崔淦","id":"f7403b8e-bf93-4f95-b150-fda70863bc51","originalAuthorName":"崔淦"},{"authorName":"尚兴彬","id":"9d5ce208-84f4-43a5-9cf1-50fc2c1301f8","originalAuthorName":"尚兴彬"},{"authorName":"刘妍","id":"ad966234-d013-44b0-b24d-42f668f2e7ea","originalAuthorName":"刘妍"}],"doi":"","fpage":"566","id":"77dc5b35-2430-400d-a94d-6db58192d320","issue":"7","journal":{"abbrevTitle":"FSYFH","coverImgSrc":"journal/img/cover/FSYFH.jpg","id":"25","issnPpub":"1005-748X","publisherId":"FSYFH","title":"腐蚀与防护"},"keywords":[{"id":"4eef65d5-d3d9-4d0e-8669-eaa38bc881da","keyword":"土壤电阻率","originalKeyword":"土壤电阻率"},{"id":"a8375db0-4b16-4e35-a8a1-ce8db16e9226","keyword":"阳极埋设方式","originalKeyword":"阳极埋设方式"},{"id":"886b136e-5955-47b4-95c3-48fa9a4bac6f","keyword":"阴极保护电位","originalKeyword":"阴极保护电位"},{"id":"a7b9a406-2a20-4315-bf75-a74673b00ca4","keyword":"边界元法","originalKeyword":"边界元法"}],"language":"zh","publisherId":"fsyfh201307003","title":"土壤电阻率和阳极埋设方式对长输管线阴极保护电位分布的影响","volume":"34","year":"2013"},{"abstractinfo":"本文选取内蒙古库布齐沙漠的风积沙进行风积沙混凝土的收缩变形试验研究.为了探讨风积沙掺量对混凝土收缩变形的影响,按照实验室配合比,将搅拌好的混凝土制成100 mm× 100 mm× 515 mm的棱柱体试件.在自然养护条件下,采用非接触式混凝土收缩变形测定方法试验不同风积沙掺量下3d内的收缩变形,同时进行无侧限抗压强度与劈裂强度试验,得到表征风积沙混凝土收缩变形规律的收缩率曲线.结果表明,随着风积沙掺量的增加,风积沙混凝土的收缩变形逐渐增大.","authors":[{"authorName":"李根峰","id":"d7e23b76-8559-4e49-946a-ef0b7fdf0650","originalAuthorName":"李根峰"},{"authorName":"申向东","id":"41a08b04-8181-4b08-95d7-dd312a6b6063","originalAuthorName":"申向东"},{"authorName":"吴俊臣","id":"28015754-3975-4ba6-a8cf-c3c0a44717a0","originalAuthorName":"吴俊臣"},{"authorName":"董伟","id":"6c0544ba-b882-4f89-b384-be5e96fce6e6","originalAuthorName":"董伟"},{"authorName":"薛慧君","id":"056afe23-f2af-4a04-b5e1-fb7a32588a56","originalAuthorName":"薛慧君"},{"authorName":"刘昱","id":"53ebf2ac-fc88-4453-be76-9fff24911d36","originalAuthorName":"刘昱"}],"doi":"","fpage":"1213","id":"06f6ab70-84b3-4431-b760-27e0b611489f","issue":"4","journal":{"abbrevTitle":"GSYTB","coverImgSrc":"journal/img/cover/GSYTB.jpg","id":"36","issnPpub":"1001-1625","publisherId":"GSYTB","title":"硅酸盐通报 "},"keywords":[{"id":"42675c3b-c369-4c12-b126-0292bde94e5b","keyword":"风积沙混凝土","originalKeyword":"风积沙混凝土"},{"id":"1a22a092-7536-4a2c-913a-ea608ec69165","keyword":"自然养护","originalKeyword":"自然养护"},{"id":"608a626b-2c90-4987-85ce-5b4a9e37c55e","keyword":"非接触式","originalKeyword":"非接触式"},{"id":"014e9b68-35be-49b7-8103-59af02955116","keyword":"收缩变形","originalKeyword":"收缩变形"}],"language":"zh","publisherId":"gsytb201604038","title":"风积沙混凝土收缩变形的试验研究","volume":"35","year":"2016"},{"abstractinfo":"本文通过风积沙内掺替代部分河砂,分别掺入0%、10%、20%和30%质量的风积沙代替相同质量的河砂,配制风积沙浮石轻骨料混凝土.研究风积沙的掺入对混凝土立方体抗压强度与轴心抗压强度的影响,应用SEM从微观上观察内部的形貌变化特征,并通过轴心抗压应力-应变曲线与《轻骨料混凝土结构技术规程》的应力-应变关系曲线进行了对比,建立了风积沙浮石轻骨料混凝土的本构模型.结果表明:风积沙可以替代部分河砂作为混凝土的细骨料,且对抗压强度值的提升贡献较大,其替代率为20%~ 30%为宜;采用《轻骨料混凝土结构技术规程》中的应力-应变关系曲线的上升段与有理分式的下降段更能真实的反应浮石轻骨料混凝土的本构关系.","authors":[{"authorName":"董伟","id":"ff6e69ab-004e-4260-82f4-52abd8c509af","originalAuthorName":"董伟"},{"authorName":"申向东","id":"64603e6f-8af1-4ba5-9be5-35250d5fdf61","originalAuthorName":"申向东"},{"authorName":"林艳杰","id":"8b2ec559-1e1c-42fa-9519-580aebbfa223","originalAuthorName":"林艳杰"},{"authorName":"何静","id":"3f2b60a4-42f6-43f5-9772-1ac236e8e8e6","originalAuthorName":"何静"},{"authorName":"俞婷婷","id":"d6405118-37cd-42e1-b100-9e96a189853b","originalAuthorName":"俞婷婷"}],"doi":"","fpage":"2089","id":"b2cc2bfc-763b-452c-9d6b-1d858a75e262","issue":"8","journal":{"abbrevTitle":"GSYTB","coverImgSrc":"journal/img/cover/GSYTB.jpg","id":"36","issnPpub":"1001-1625","publisherId":"GSYTB","title":"硅酸盐通报 "},"keywords":[{"id":"c2038176-4718-41bf-be26-23ea537f2bb9","keyword":"风积沙","originalKeyword":"风积沙"},{"id":"28d53869-4bbc-4ccc-ac68-2082b6309fa2","keyword":"浮石轻骨料混凝土","originalKeyword":"浮石轻骨料混凝土"},{"id":"821d09d7-9137-4702-a924-b573c4b30278","keyword":"抗压强度","originalKeyword":"抗压强度"},{"id":"f82aaa5a-1141-46f4-bfb7-1bcc615d1089","keyword":"应力-应变曲线","originalKeyword":"应力-应变曲线"},{"id":"19fdb608-03b7-4f1e-a38e-68115dbb6ab3","keyword":"本构关系","originalKeyword":"本构关系"}],"language":"zh","publisherId":"gsytb201508003","title":"风积沙的掺入对浮石轻骨料混凝土性能的影响","volume":"34","year":"2015"},{"abstractinfo":"介绍了沙雾镍电镀的工艺配方,讨论了电镀液成分的作用和影响工艺的因素,指出了镀液维护方法,并分析了工件常见故障,提出相应的解决方法.","authors":[{"authorName":"石磊","id":"07c1ce49-e9a2-4b35-a311-545c4f272f6d","originalAuthorName":"石磊"},{"authorName":"王清","id":"80f54f19-4513-47f9-bc3f-7eb3d4609e20","originalAuthorName":"王清"},{"authorName":"王泽波","id":"b315e8c9-2bcb-4952-be9c-44c4a66af6ba","originalAuthorName":"王泽波"},{"authorName":"于登文","id":"8b4dcf26-33a5-4661-bbe2-7476355a78b7","originalAuthorName":"于登文"}],"doi":"10.3969/j.issn.1001-3660.2004.03.025","fpage":"61","id":"40cd5a56-5c60-4fc5-9020-8f18bf533ed0","issue":"3","journal":{"abbrevTitle":"BMJS","coverImgSrc":"journal/img/cover/BMJS.jpg","id":"3","issnPpub":"1001-3660","publisherId":"BMJS","title":"表面技术 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