Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

Uniform Depth Channel Flow: Problem Solving01:18

Uniform Depth Channel Flow: Problem Solving

126
To calculate the flow rate for a trapezoidal channel, first, identify the bottom width, side slope, and flow depth of the channel. The cross-sectional area (A) corresponding to the depth of flow (y), channel bottom width (B), and side slope (θ) is determined by:Next, calculate the wetted perimeter, which includes the bottom width and the sloped side lengths in contact with the water. Using the values of the cross-sectional area and the wetted perimeter, determine the hydraulic radius by...
126
Uniform Depth Channel Flow01:27

Uniform Depth Channel Flow

167
Uniform depth channel flow keeps fluid depth consistent along channels such as irrigation canals. In natural channels, such as rivers, approximate uniform flow is often assumed. This condition occurs when the channel’s bottom slope matches the energy slope, balancing potential energy lost from gravity with head loss due to shear stress. This balance prevents depth changes along the channel length, resulting in a steady, uniform flow.Uniform flow in open channels with a constant cross-section...
167
Density, Specific Weight, Specific Gravity and Compressibility of Fluid01:27

Density, Specific Weight, Specific Gravity and Compressibility of Fluid

736
Density, specific weight, specific gravity, and compressibility are fundamental properties of fluids. Density is the mass per unit volume, characterizing the mass of a fluid system. It influences buoyancy, pressure, flow dynamics, viscosity, thermal conductivity, and sound propagation. For instance, in pipeline design, accurate density measurements ensure that the pipeline can handle the fluid's mass.
Specific weight represents the weight per unit volume and is calculated by multiplying...
736
Density00:56

Density

15.6K
Density is an important characteristic of substances, crucial in determining whether an object sinks or floats in a fluid. Its SI unit is kg/m3, and its cgs unit is g/cm3. The density of an object helps in identifying its composition, and also reveals information about the phase of the matter and its substructure. The densities of liquids and solids are roughly comparable, consistent with the fact that their atoms are in close contact. However, gases have much lower densities than liquids and...
15.6K
Bernoulli's Equation for Flow Normal to a Streamline01:16

Bernoulli's Equation for Flow Normal to a Streamline

944
Bernoulli's equation for flow normal to a streamline explains how pressure varies across curved streamlines due to the outward centrifugal forces induced by the fluid's curvature. The pressure is higher on the inner side of the curve, near the center of curvature, and decreases outward to balance these centrifugal forces.
The pressure difference depends on the fluid's velocity and radius of curvature. The pressure variation is minimal in flows with nearly straight streamlines.
944
Plane Potential Flows01:23

Plane Potential Flows

453
Plane potential flows simplify fluid motion by assuming the fluid to be irrotational and incompressible. These characteristics allow these flows to be described by a velocity potential function, ϕ, representing the flow speed in a given direction, and a stream function, ψ, that visualizes the flow path, both governed by Laplace's equation. These parameters help in estimating flow patterns, velocity distributions, and pressure fields around various hydraulic structures.
Uniform...
453

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Functional principal component analysis forsparse censored data.

Biometrika·2026
Same author

A spatiotemporal optimization engine for prescribed burning in the Southeast US.

Ecological informatics·2026
Same author

Psychotherapy and Counseling Providers' Subjective Experiences Serving Survivors of Intimate Partner Violence (IPV): A Scoping Review of Qualitative Research.

Trauma, violence & abuse·2025
Same author

Advancing food security: Rice yield estimation framework using time-series satellite data & machine learning.

PloS one·2024
Same author

Respiratory and allergic outcomes among farmworkers exposed to pesticides in Costa Rica.

The Science of the total environment·2024
Same author

Residential Structural Racism and Prevalence of Chronic Health Conditions.

JAMA network open·2023
Same journal

A comprehensive dataset comparing endogenous and exogenous HIL interference across diverse clinical immunoassays.

Scientific data·2026
Same journal

Chromosome-level genome assembly of the Japanese sparrowhawk Accipiter gularis (Aves: Accipitriformes: Accipitridae).

Scientific data·2026
Same journal

Global Snow-free Leaf Area Index Dataset 1985-2020 for Earth System Modeling.

Scientific data·2026
Same journal

An updated inventory of rock glaciers in the Eastern Himalaya.

Scientific data·2026
Same journal

Tephritid26: A standardized, multi-angle image dataset of quarantine-significant true fruit flies for deep learning-based identification.

Scientific data·2026
Same journal

Cause-of-death data series to monitor cause-specific mortality across time and space.

Scientific data·2026
查看所有相关文章

相关实验视频

Updated: Sep 14, 2025

Measuring Carbon-based Contaminant Mineralization Using Combined CO2 Flux and Radiocarbon Analyses
11:19

Measuring Carbon-based Contaminant Mineralization Using Combined CO2 Flux and Radiocarbon Analyses

Published on: October 21, 2016

12.0K

使用规范化流量 (CDC-NF) 进行完整的密度校正,用于CMIP6 GCM.

Shiqi Fang1, Reetam Majumder2, Emily Hector3

  • 1Department of Civil, Construction and Environmental Engineering, North Carolina State University, Raleigh, NC, USA. sfang6@ncsu.edu.

Scientific data
|July 23, 2025
PubMed
概括
此摘要是机器生成的。

一种名为使用规范流量的完整密度校正 (CDC-NF) 的新方法通过纠正联合分布中的偏差来改善气候模型预测. 这提高了气候影响研究的准确性,特别是在极端天气事件中.

更多相关视频

Measurements of CO2 Fluxes at Non-Ideal Eddy Covariance Sites
09:05

Measurements of CO2 Fluxes at Non-Ideal Eddy Covariance Sites

Published on: June 24, 2019

8.0K
Characterizing Microbiome Dynamics – Flow Cytometry Based Workflows from Pure Cultures to Natural Communities
09:57

Characterizing Microbiome Dynamics – Flow Cytometry Based Workflows from Pure Cultures to Natural Communities

Published on: July 12, 2018

12.1K

相关实验视频

Last Updated: Sep 14, 2025

Measuring Carbon-based Contaminant Mineralization Using Combined CO2 Flux and Radiocarbon Analyses
11:19

Measuring Carbon-based Contaminant Mineralization Using Combined CO2 Flux and Radiocarbon Analyses

Published on: October 21, 2016

12.0K
Measurements of CO2 Fluxes at Non-Ideal Eddy Covariance Sites
09:05

Measurements of CO2 Fluxes at Non-Ideal Eddy Covariance Sites

Published on: June 24, 2019

8.0K
Characterizing Microbiome Dynamics – Flow Cytometry Based Workflows from Pure Cultures to Natural Communities
09:57

Characterizing Microbiome Dynamics – Flow Cytometry Based Workflows from Pure Cultures to Natural Communities

Published on: July 12, 2018

12.1K

科学领域:

  • 气候科学是气候科学.
  • 大气科学 大气科学
  • 数据科学是数据科学.

背景情况:

  • 全球气候模型 (GCM) 对气候预测至关重要,但存在偏见,限制了它们在影响评估中的使用.
  • 现有的偏差校正 (BC) 方法,如量子位映射,无法准确地表示联合极端和交叉变量关系.

研究的目的:

  • 引入一种新的偏差校正方法,即使用规范化流量的完整密度校正 (CDC-NF),它解决了传统方法的局限性.
  • 提高GCMs的完整联合分布的代表性,特别是对于极端事件和多变量依赖性.

主要方法:

  • 开发了CDC-NF,一种采用可逆变换的方法来调整GCM输出的完整联合分布.
  • 将CDC-NF应用于CMIP6 GCM预测中的每日降水和最高温度数据,使用NOAA nClimGrid每日观测.
  • 评估了CDC-NF与传统的BC方法相比,使用了像瓦斯斯坦距离,RMSE和PBIAS这样的指标.

主要成果:

  • 与传统的BC方法相比,CDC-NF显示了显著的改进,特别是在第90百分点的极端.
  • 该方法在保持变量之间的交叉相关性结构方面表现出更高的准确性.
  • 在模拟复合极端事件中观察到更好的性能.

结论:

  • CDC-NF为气候模型输出的偏差校正提供了强大的进步.
  • 这种方法提高了气候预测的可靠性,并提高了气候变化中的气候影响研究的准确性.