Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Laminar and Turbulent Flow01:07

Laminar and Turbulent Flow

11.1K
Fluid dynamics is the study of fluids in motion. Velocity vectors are often used to illustrate fluid motion in applications like meteorology. For example, wind—the fluid motion of air in the atmosphere—can be represented by vectors indicating the speed and direction of the wind at any given point on a map. Another method for representing fluid motion is a streamline. A streamline represents the path of a small volume of fluid as it flows. When the flow pattern changes with time, the...
11.1K
Turbulent Flow01:24

Turbulent Flow

727
Turbulent flow is characterized by unpredictable fluctuations in velocity and pressure, which result in a chaotic fluid movement distinct from the orderly patterns of laminar flow. While laminar flow is governed by smooth, parallel layers with minimal mixing, turbulent flow exhibits highly irregular, three-dimensional patterns. This behavior arises due to instabilities in the fluid's velocity profile, and amplifies as the flow velocity increases. Minor disturbances, known as turbulent...
727
Flame Photometry: Overview01:02

Flame Photometry: Overview

1.5K
Flame photometry, also known as flame emission spectrometry, is a technique used for the qualitative and quantitative analysis of elements present in a sample using a flame as the source of excitation energy. The concept of flame photometry was realized in the early 1860s by Kirchhoff and Bunsen, who discovered that specific elements emit characteristic radiation when excited in flames. The first instrument developed for this purpose was used to measure sodium (Na) in plant ash using a Bunsen...
1.5K
Flame Photometry: Lab01:16

Flame Photometry: Lab

944
In a flame photometer, when a solution like potassium chloride is aspirated into the flame, the solvent evaporates, leaving behind dehydrated salt. This salt dissociates into free gaseous atoms in their ground state. Some of these atoms absorb energy from the flame, leading to their excitation. The excited atoms return to the ground state, emitting photons at characteristic wavelengths. Because only electronic transitions are involved, the resulting emission lines are very narrow. The intensity...
944
Turbulent Flow: Problem Solving01:09

Turbulent Flow: Problem Solving

410
Carbonation is a process used to dissolve carbon dioxide gas in a liquid, commonly used in the production of carbonated beverages. Achieving efficient carbonation requires careful control of temperature, pressure, and flow conditions. By adjusting these parameters, carbonation efficiency can be maximized, producing a higher concentration of CO2 in the liquid.
Temperature is a key factor in CO2 solubility. In this case, the CO2 gas and the liquid are cooled to 20°C. Lower temperatures enhance...
410
Requirements for Human Life01:26

Requirements for Human Life

13.5K
The Earth and its atmosphere have provided humans with air, water, and food, but these are not the only requirements for survival. Humans also require a specific range of temperature and pressure that the Earth and its atmosphere provides.
Oxygen
Atmospheric air is only about 20 percent oxygen, but that oxygen is a key component of the chemical reactions that keep the body alive, including the reactions that produce ATP. Brain cells are susceptible to a lack of oxygen because they require a...
13.5K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Are radiologic patterns consistent with pathologic anatomy in calcified gastric cancer?

Revista de gastroenterologia de Mexico (English)·2020
Same author

Clinical results of radial arthroplasty in Hotchkiss' terrible triad, a case series of 47.

Revista espanola de cirugia ortopedica y traumatologia (English ed.)·2019
Same author

A Thickened Stochastic Fields Approach for Turbulent Combustion Simulation.

Flow, turbulence and combustion·2019
Same author

Use of grafts in rotator cuff re-rupture.

Revista espanola de cirugia ortopedica y traumatologia·2016
Same author

Radial head arthroplasty, 11 years experience: A series of 82 patients.

Revista espanola de cirugia ortopedica y traumatologia·2015

Related Experiment Video

Updated: Jan 31, 2026

Fiber Optic Distributed Sensors for High-resolution Temperature Field Mapping
09:48

Fiber Optic Distributed Sensors for High-resolution Temperature Field Mapping

Published on: November 7, 2016

12.4K

Resolution Requirements in Stochastic Field Simulation of Turbulent Premixed Flames.

M A Picciani1, E S Richardson1, S Navarro-Martinez2

  • 11Faculty of Engineering and the Environment, University of Southampton, Southampton, UK.

Flow, Turbulence and Combustion
|January 8, 2019
PubMed
Summary

Investigating spatial resolution for Stochastic Fields simulations in turbulent combustion reveals that numerical grids often under-resolve flame structures. This leads to inaccurate predictions, necessitating methods like the Thickened Stochastic Fields approach for practical applications.

Keywords:
Premixed combustionProbability density functionResolution requirementsStochastic fieldsTurbulent combustion

More Related Videos

Simulation of Human-induced Vibrations Based on the Characterized In-field Pedestrian Behavior
10:52

Simulation of Human-induced Vibrations Based on the Characterized In-field Pedestrian Behavior

Published on: April 13, 2016

9.2K
Direct Stochastic Optical Reconstruction Microscopy of Extracellular Vesicles in Three Dimensions
09:36

Direct Stochastic Optical Reconstruction Microscopy of Extracellular Vesicles in Three Dimensions

Published on: August 26, 2021

4.5K

Related Experiment Videos

Last Updated: Jan 31, 2026

Fiber Optic Distributed Sensors for High-resolution Temperature Field Mapping
09:48

Fiber Optic Distributed Sensors for High-resolution Temperature Field Mapping

Published on: November 7, 2016

12.4K
Simulation of Human-induced Vibrations Based on the Characterized In-field Pedestrian Behavior
10:52

Simulation of Human-induced Vibrations Based on the Characterized In-field Pedestrian Behavior

Published on: April 13, 2016

9.2K
Direct Stochastic Optical Reconstruction Microscopy of Extracellular Vesicles in Three Dimensions
09:36

Direct Stochastic Optical Reconstruction Microscopy of Extracellular Vesicles in Three Dimensions

Published on: August 26, 2021

4.5K

Area of Science:

  • Computational fluid dynamics
  • Turbulent combustion modeling

Background:

  • The Stochastic Fields approach is valuable for modeling turbulent combustion within Large Eddy Simulations (LES).
  • Accurate simulation requires resolving flame structures generated by the Stochastic Fields equation.

Purpose of the Study:

  • To investigate the spatial resolution requirements for the Stochastic Fields probability density function approach in turbulent premixed combustion.
  • To assess the impact of numerical under-resolution on LES predictions of turbulent flames.

Main Methods:

  • Analysis of Stochastic Fields simulations for a planar turbulent premixed flame.
  • LES of a laboratory Bunsen flame, varying grid spacing and filter length scale.
  • Comparison of simulation results with varying resolution levels.

Main Results:

  • Flame-like structures in Stochastic Fields simulations can be significantly narrower than the LES filter length scale.
  • Under-resolution is most severe in low Karlovitz number combustion, with structure thickness near laminar flame thickness.
  • Standard practice of matching LES filter length scale to grid spacing causes severe under-resolution, flame thickening, and errors in turbulent flame speed.

Conclusions:

  • Accurate numerical resolution for Stochastic Fields equations is often computationally prohibitive for high-pressure combustion.
  • The findings motivate the development of alternative approaches, such as the Thickened Stochastic Fields method, to ensure numerical accuracy.