拖曳水池,船舶模型中速度矢量场,速度场检测方案(粒子图像测速)
In January 2004, Memorial University purchased a stereoscopic Particle Image Velocimetry
(PIV) system for making flow measurements. Although the system was potentially very
versatile, its primary application was envisioned to be in a towing tank. The system was
supplied as a complete package of hardware and software for calibration, data collection and
analysis. The intention of the PIV system designers was to collect as many data frames as
possible for a fixed measurement plane location, relative to the model. This required the PIV
system to be fixed on the towing carriage, moving with the model being studied. It was found
during some preliminary experiments that an active seeding delivery system was necessary to
ensure sufficiently high seeding particle concentration, especially when measuring flow
velocities around a model hull with a large yaw angle. This paper describes the development of
a seeding technique for a PIV system that can be used in a towing tank. The paper also includes
an estimate of the uncertainty of the measurement system, including the analysis of the flow
behind the device used to deliver seed particles into the flow.
检测样品：
船舶
检测项：
速度矢量场,速度场
北京欧兰科技发展有限公司
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船舶,机动运行特性,吊舱,螺旋浆,推进动态过程中速度场,速度矢量场检测方案(粒子图像测速)
This paper presents preliminary results of research being conducted at MIT on the dynamics of an azimuthing podded propulsor, with emphasis on the application to nonlinear vehicle maneuvering
dynamics. The paper focuses on the experimental investigation of propulsor-induced maneuvering forces and moments, as well as characterization and documentation of the vortex wake. A test
program of quasi-steady and unsteady/dynamic tests on an azimuthing podded propulsor unit has been carried out in the MIT ship model towing tank. Forces and motor current were measured for subsequent implementation of a multi-parameter dynamic model of an azimuthing propulsor within nonlinear vehicle maneuvering simulations. Additional testing was conducted with the azimuthing propulsor installed in a surface vehicle attached to a Planar Motion Mechanism (PMM), where quasi-steady forces and moments were measured. Parameterized results, as well as notable maneuvering force effects and visualizations of the wake are presented. Parametric results clearly illustrate unique characteristics of vectored-propulsion, including significant increase in vectored thrust and strong “destabilizing” thrust and normal force with propulsor azimuth, plus other important related effects. Limited results of wake flow visualization, using Particle Image Velocimetry (PIV), are also presented.
检测样品：
船舶
检测项：
速度场,速度矢量场
北京欧兰科技发展有限公司
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流体中速度场检测方案(粒子图像测速)
This paper presents an experimental study on wave interactions with a
rectangular barge in a beam sea condition. Regular waves with a wave
period the same as the natural frequency of the barge were used in the experiments due to the fact that the barge is prone to capsizing under such waves. The barge was fixed on the free surface and no wave
overtopping was assumed. Particle Image Velocimetry (PIV) was
employed to measure the full-field two-dimensional velocity. Since the flow is highly turbulent, the phase-averaging technique was used to the extract the mean flow and turbulence properties. The mean flow
pattern, including velocity, vorticity, and streamline, was analyzed to quantify the mechanism of the interactions. The generation and
evolution of vorticity and turbulence kinetic energy were demonstrated.The turbulent kinetic energy is found to highly correlate with the vorticity field
检测样品：
船舶
检测项：
速度场
北京欧兰科技发展有限公司
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水流体中速度场检测方案(粒子图像测速)
The flow around a ship at yaw angles beyond those
encountered during manoeuvres has not been the
subject of much research reported in the literature.
These conditions are particularly important for an
escort tug, since it uses large yaw angles to generate
hydrodynamic forces that are used to control a ship
(normally a tanker) in the event of an emergency.
This paper presents CFD predictions for the flow
around an escort tug at a yaw angle of 45 degrees and
compares them to PIV measurements of the flow
patterns. The CFD code predicts the essential
features measured within the flow, such as the
separation of the flow from the upstream bilge, and
the formation of a large vortex generated by the low
aspect ratio fin. The predicted vectors were compared
with the measured ones using a numerical technique,
and the agreements were found, on average, to be
within 10%. This level of agreement was within the
estimated uncertainty of the PIV system used for the
experiments.
检测样品：
船舶
检测项：
速度场
北京欧兰科技发展有限公司
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与核潜艇运行有关的样品中Cr元素检测方案(ICP-AES)
The ULTIMA 2 ICP allows simple and rapid analysis using one single analytical method. The simple dilution made here helps to reduce matrix effects and to use a simple calibration in water, covering all the concentration ranges required. Some samples can be analyzed directly without dilution such as example sample 6, owing to the robustness of the plasma.
检测样品：
船舶
检测项：
Cr元素
HORIBA（中国）
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与核潜艇运行有关的样品中Mn元素检测方案(ICP-AES)
The ULTIMA 2 ICP allows simple and rapid analysis using one single analytical method. The simple dilution made here helps to reduce matrix effects and to use a simple calibration in water, covering all the concentration ranges required. Some samples can be analyzed directly without dilution such as example sample 6, owing to the robustness of the plasma.
检测样品：
船舶
检测项：
Mn元素
HORIBA（中国）
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与核潜艇运行有关的样品中K元素检测方案(ICP-AES)
The ULTIMA 2 ICP allows simple and rapid analysis using one single analytical method. The simple dilution made here helps to reduce matrix effects and to use a simple calibration in water, covering all the concentration ranges required. Some samples can be analyzed directly without dilution such as example sample 6, owing to the robustness of the plasma.
检测样品：
船舶
检测项：
K元素
HORIBA（中国）
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与核潜艇运行有关的样品中元素检测方案(ICP-AES)
The ULTIMA 2 ICP allows simple and rapid analysis using one single analytical method. The simple dilution made here helps to reduce matrix effects and to use a simple calibration in water, covering all the concentration ranges required. Some samples can be analyzed directly without dilution such as example sample 6, owing to the robustness of the plasma.
检测样品：
船舶
检测项：
元素
HORIBA（中国）
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与核潜艇运行有关的样品中Fe元素检测方案(ICP-AES)
The ULTIMA 2 ICP allows simple and rapid analysis using one single analytical method. The simple dilution made here helps to reduce matrix effects and to use a simple calibration in water, covering all the concentration ranges required. Some samples can be analyzed directly without dilution such as example sample 6, owing to the robustness of the plasma.
检测样品：
船舶
检测项：
Fe元素
HORIBA（中国）
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与核潜艇运行有关的样品中Ni元素检测方案(ICP-AES)
The ULTIMA 2 ICP allows simple and rapid analysis using one single analytical method. The simple dilution made here helps to reduce matrix effects and to use a simple calibration in water, covering all the concentration ranges required. Some samples can be analyzed directly without dilution such as example sample 6, owing to the robustness of the plasma.
检测样品：
船舶
检测项：
Ni元素
HORIBA（中国）
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与核潜艇运行有关的样品中Co检测方案(ICP-AES)
The ULTIMA 2 ICP allows simple and rapid analysis using one single analytical method. The simple dilution made here helps to reduce matrix effects and to use a simple calibration in water, covering all the concentration ranges required. Some samples can be analyzed directly without dilution such as example sample 6, owing to the robustness of the plasma.
检测样品：
船舶
检测项：
Co
HORIBA（中国）
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船舶废气中净化工艺过程检测方案(多气体分析仪)
船舶从航行区域上可划分为国际远洋航行船舶和国内航行船舶，近年来，随着全球航运贸易的发展，船舶柴油机排放的尾气成为了大气污染的主要来源之一。其中，在国际远洋船舶燃烧低品质重油所释放的尾气中，NOx和SOx所占比例很高。对环境造成了严重的影响。国际海事组织（IMO）针对当前船舶柴油机所产生的污染物，出台《国际防止船舶造成污染公约》（MARPOL73/78）标准 ，主要内容是对船舶排放的消耗臭氧物质、氮氧化物（NOX）、硫氧化物（SOX）、挥发性有机化合物（VOCS）及船用焚烧物进行控制，以防止这些排放物对大气的进一步污染。
目前大多数船舶使用的是压燃式发动机，其燃料油中硫含量较高，排放的污染物包括氮氧化物（NOx）、硫氧化物（S0x）、一氧化碳（C0）、碳氢化合物（HC）、颗粒物（PM）等，其中NOx和SOx为主要污染物，国际海事组织（IMO）将其列为首要控制的船舶尾气污染物，对大气环境造成严重污染破坏。
检测样品：
船舶
检测项：
净化工艺过程
四方光电（武汉）仪器有限公司
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高低温交变可靠试验有哪些方法及试验标准
高低温交变可靠试验的方法和标准如下：
一、方法
1. 设定温度范围：根据产品的使用条件和规定标准，确定测试的高低温范围，并设定温度梯度和保持时间。
2. 准备样品：选择代表性的产品样品，并确保其符合实验要求，如外观完好、功能正常等。
3. 设定测试装置：根据产品的特性和实验要求，选择合适的测试装置和设备。测试装置应具备温度控制功能，并能够精确地控制温度。
4. 进行试验：将样品放置在测试装置中，并按照设定的温度范围和保持时间进行高低温交变测试。在测试过程中，需要监测产品的温度变化、电气性能等相关参数。
5. 数据分析：根据实验数据，分析产品的性能和可靠性，包括机械性能、电气性能、化学性能等方面的测试和分析。
6. 编写报告：根据实验数据和分析结果，编写高低温交变可靠试验报告，报告应包括实验目的、实验过程、实验结果、结论和建议等内容。
检测样品：
船舶
检测项：
高低温可靠性试验
东莞市皓天试验设备有限公司
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复合式盐雾试验机的使用教程
复合式盐雾试验箱操作步骤如下：
1)把试验箱接上电源，操作面板上有三个指示灯亮，这三个指示灯都是水位指示灯，分别是两个低水位灯，一个低盐水指示灯。
2)需要往盐雾复合式试验箱箱体里面加入纯净水，打开盐雾复合式试验箱箱盖，向里面加入纯净水，直至另一个低水位灯熄灭为止。
3)需要加入盐水，先配置盐水，一般做中性盐雾试验5000ml纯净水加入500g氯hua钠（客户根据自身试验材料的标准需要配置），然后搅拌均匀，打开试药入口加入盐水。
4)打开盐雾复合式试验箱的操作面板上的喷雾开关，盐雾复合式试验箱就可以开始喷雾试验了。
5)盐雾试验完成后，打开除雾开关，可以自动去除箱体内的密封的盐雾气体（箱体后面有排气口，接上排气管，管口放置到室外），避免腐蚀室内物品。
检测样品：
船舶
检测项：
盐雾腐蚀试验
广东皓天检测仪器有限公司
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仪器信息网行业应用栏目为您提供28篇船舶检测方案，可分别用于，参考标准主要有等