NANOSCIENCE AND NANOTECHNOLOGY: NANO-SciTech最新文献_第5页

The primary design method development of centrifugal compressor impellers based on the analysis of the geometrical parameters 在对离心压气机叶轮几何参数分析的基础上，提出了离心压气机叶轮的初步设计方法

NANOSCIENCE AND NANOTECHNOLOGY: NANO-SciTech Pub Date : 2019-08-28 DOI: 10.1063/1.5122102

A. Rekstin, Y. Galerkin

引用次数: 10

Application of ion-beam irradiation and heat treatment to optimisation of the structure and properties of composites based on multi-walled carbon nanotubes and metal oxide 离子束辐照和热处理在多壁碳纳米管与金属氧化物复合材料结构性能优化中的应用

NANOSCIENCE AND NANOTECHNOLOGY: NANO-SciTech Pub Date : 2019-08-28 DOI: 10.1063/1.5122135

S. N. Nesov, P. Korusenko, V. V. Bolotov, S. N. Povoroznyuk, E. V. Knyazev

引用次数: 0

Selection of the parameters of CFD calculation model of high-pressure centrifugal compressor stage with the inlet guide vanes 选取了带进口导叶的高压离心压气机级CFD计算模型的参数

NANOSCIENCE AND NANOTECHNOLOGY: NANO-SciTech Pub Date : 2019-08-28 DOI: 10.1063/1.5122063

V. Karabanova, A. Vanyashov, V. Yusha

{"title":"Selection of the parameters of CFD calculation model of high-pressure centrifugal compressor stage with the inlet guide vanes","authors":"V. Karabanova, A. Vanyashov, V. Yusha","doi":"10.1063/1.5122063","DOIUrl":"https://doi.org/10.1063/1.5122063","url":null,"abstract":"In this work, the study of mathematical models of transonic centrifugal compressor stage with the inlet guide vanes (IGV) and axial-radial semi-open impeller was carried out. The flow was studied using the Navier-Stokes equations closed by the Shear Stress Transport (SST) turbulence model. The modeling was performed for the rotation frequency of 28 076 rpm and two angles of rotation of IGV (initial position θ10 = +25° and rotated by +10° (θ1 = +35°). The influence of the parameters of the computational model (the number of elements in the computational mesh, interconnect interfaces) on the result is considered. The influence of the gap between the impeller blades and the body is estimated. The results of the study of gas-dynamic characteristics and flow structure show that only some parameters have a significant impact on the modeling result.In this work, the study of mathematical models of transonic centrifugal compressor stage with the inlet guide vanes (IGV) and axial-radial semi-open impeller was carried out. The flow was studied using the Navier-Stokes equations closed by the Shear Stress Transport (SST) turbulence model. The modeling was performed for the rotation frequency of 28 076 rpm and two angles of rotation of IGV (initial position θ10 = +25° and rotated by +10° (θ1 = +35°). The influence of the parameters of the computational model (the number of elements in the computational mesh, interconnect interfaces) on the result is considered. The influence of the gap between the impeller blades and the body is estimated. The results of the study of gas-dynamic characteristics and flow structure show that only some parameters have a significant impact on the modeling result.","PeriodicalId":377067,"journal":{"name":"NANOSCIENCE AND NANOTECHNOLOGY: NANO-SciTech","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133632889","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Polymer plates geometry monitoring 聚合物板几何监测

NANOSCIENCE AND NANOTECHNOLOGY: NANO-SciTech Pub Date : 2019-08-28 DOI: 10.1063/1.5122171

O. Trapeznikova, S. V. Takayuk, I. Nagornova, A. Kozhushko, E. G. Bezzateeva, E. L. Kolbina

{"title":"Polymer plates geometry monitoring","authors":"O. Trapeznikova, S. V. Takayuk, I. Nagornova, A. Kozhushko, E. G. Bezzateeva, E. L. Kolbina","doi":"10.1063/1.5122171","DOIUrl":"https://doi.org/10.1063/1.5122171","url":null,"abstract":"Polymer materials are widely used in different industry areas, in particular as flexography printing plates. The main operating feature of printing flexography elements forming an image is in their 3D-characteristics stability, including profile, coordinates and size parameters. There are a few \"flat-topped” screen dots techniques; at the printing process the dots profile planes shape can be changed under contact zone pressure, so profile geometry dynamics monitoring during operating is actual. Contactless method of analyzing with the view-measuring microscope tool VMM150 was tested for the monitoring. The algorithm of printing elements geometry estimation was developed.Polymer materials are widely used in different industry areas, in particular as flexography printing plates. The main operating feature of printing flexography elements forming an image is in their 3D-characteristics stability, including profile, coordinates and size parameters. There are a few \"flat-topped” screen dots techniques; at the printing process the dots profile planes shape can be changed under contact zone pressure, so profile geometry dynamics monitoring during operating is actual. Contactless method of analyzing with the view-measuring microscope tool VMM150 was tested for the monitoring. The algorithm of printing elements geometry estimation was developed.","PeriodicalId":377067,"journal":{"name":"NANOSCIENCE AND NANOTECHNOLOGY: NANO-SciTech","volume":"16 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132974678","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The effect of fluorine additives into Pt/WO3-ZrO2-Al2O3 catalysts for n-hexane isomerization 氟添加剂对Pt/WO3-ZrO2-Al2O3催化剂正己烷异构化的影响

NANOSCIENCE AND NANOTECHNOLOGY: NANO-SciTech Pub Date : 2019-08-28 DOI: 10.1063/1.5122031

V. Shkurenok, M. Smolikov, D. I. Kir’yanov, T. Gulyaeva, I. V. Muromtsev, A. Belyi

{"title":"The effect of fluorine additives into Pt/WO3-ZrO2-Al2O3 catalysts for n-hexane isomerization","authors":"V. Shkurenok, M. Smolikov, D. I. Kir’yanov, T. Gulyaeva, I. V. Muromtsev, A. Belyi","doi":"10.1063/1.5122031","DOIUrl":"https://doi.org/10.1063/1.5122031","url":null,"abstract":"The effect of fluorine additives (1.5–3 wt.%) in Pt/WO3−ZrO2−Al2O3 catalysts on n−hexane isomerization was studied. The best performance was obtained in the presence of catalyst with the fluorine content 2.5 wt.% at 240°C: conversion – 80.0 %, selectivity – 88.5%, yield of stable catalyzate – 93.2 wt.%, yield of the sum of hexane isomers – 70.8 wt.%, and yield of high-octane dimethylbutanes (DMB) – 16.1 wt.%. Fluorine additives were shown to change the unit cell parameter a of tetragonal zirconia due to the substitution of oxygen atoms by fluorine atoms.The effect of fluorine additives (1.5–3 wt.%) in Pt/WO3−ZrO2−Al2O3 catalysts on n−hexane isomerization was studied. The best performance was obtained in the presence of catalyst with the fluorine content 2.5 wt.% at 240°C: conversion – 80.0 %, selectivity – 88.5%, yield of stable catalyzate – 93.2 wt.%, yield of the sum of hexane isomers – 70.8 wt.%, and yield of high-octane dimethylbutanes (DMB) – 16.1 wt.%. Fluorine additives were shown to change the unit cell parameter a of tetragonal zirconia due to the substitution of oxygen atoms by fluorine atoms.","PeriodicalId":377067,"journal":{"name":"NANOSCIENCE AND NANOTECHNOLOGY: NANO-SciTech","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124029943","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Average annual efficiency evaluation in the design of life support systems 生命维持系统设计的年平均效率评估

NANOSCIENCE AND NANOTECHNOLOGY: NANO-SciTech Pub Date : 2019-08-28 DOI: 10.1063/1.5122069

S. Muraveinikov, A. Sulin, I. V. Baranov, A. Nikitin

引用次数: 3

Technique for axial pump characteristics predicting in CFD package OpenFOAM CFD软件OpenFOAM中轴流泵特性预测技术

NANOSCIENCE AND NANOTECHNOLOGY: NANO-SciTech Pub Date : 2019-08-28 DOI: 10.1063/1.5122113

E. Ivanov, A. Zharkovsky, I. Borshchev, D. Svoboda

引用次数: 9

Calculation methods for quality indicators of commercial gasolines (petrochemicals) 商品汽油(石化产品)质量指标计算方法

NANOSCIENCE AND NANOTECHNOLOGY: NANO-SciTech Pub Date : 2019-08-28 DOI: 10.1063/1.5122049

A. Zykina, O. Kaneva, M. Y. Savelev, T. Fink

{"title":"Calculation methods for quality indicators of commercial gasolines (petrochemicals)","authors":"A. Zykina, O. Kaneva, M. Y. Savelev, T. Fink","doi":"10.1063/1.5122049","DOIUrl":"https://doi.org/10.1063/1.5122049","url":null,"abstract":"When developing mathematical support of automated supervisor control system for commercial gasoline production, the problem arises to find favorable ratio for blending stock from component containers to obtain end product of the required quality in commercial tank. While in reality, the quality indicator values measurement for blending stock in container fill-up tends to be not factored in the production process. The component quality in individual batches of component containers fill-up differs, and the resulting indicators for the end product are subject to the those of the components. The article analyzes the calculation methods for quality indicators values of the commercial gasolines.When developing mathematical support of automated supervisor control system for commercial gasoline production, the problem arises to find favorable ratio for blending stock from component containers to obtain end product of the required quality in commercial tank. While in reality, the quality indicator values measurement for blending stock in container fill-up tends to be not factored in the production process. The component quality in individual batches of component containers fill-up differs, and the resulting indicators for the end product are subject to the those of the components. The article analyzes the calculation methods for quality indicators values of the commercial gasolines.","PeriodicalId":377067,"journal":{"name":"NANOSCIENCE AND NANOTECHNOLOGY: NANO-SciTech","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125502291","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Analysis of load conditions of piston pump unit cylinder under temperature effects 温度作用下柱塞泵机组缸的负荷工况分析

NANOSCIENCE AND NANOTECHNOLOGY: NANO-SciTech Pub Date : 2019-08-28 DOI: 10.1063/1.5122056

I. Aistov, K. Vansovich, S. Busarov, D. Titov

引用次数: 0

Analysis of the applicability in the ansys interface of finite element models for modeling composite rubber-cord designs of vibration-isolating pipes 有限元模型在ansys界面中对复合橡胶绳隔振管道设计建模的适用性分析

NANOSCIENCE AND NANOTECHNOLOGY: NANO-SciTech Pub Date : 2019-08-28 DOI: 10.1063/1.5122093

V. G. Tsyss, M. Y. Sergaeva

引用次数: 2