I want to know about differentiation between urban heat and urban heat island?

What are the countries most affected by extreme rainfall as a result of climate change?

Increased heat, drought and insect outbreaks, all associated to climate change, have increased wildfires. Decreasing water supplies, declined agricultural yields, health impacts in cities owing to...

01 March 2021 7,168 9 View

What is recommended for solid domain in ANSYS FLUENT?

Should I mesh the solid domain ? or should I use wall thickness? or Shell conduction? for Heat Transfer between two fluids of a Heat Exchanger. what is recommended?

01 March 2021 9,785 3 View

Heat exchanger with liquid Nitrogen as coolant?

I want to cool Natural Gas from 195 Kelvin to 138 Klevin in a heat exchanger by using liquid nitrogen as the coolant medium. When entering the heat exchanger, the liquid nitrogen will have a...

01 March 2021 6,450 5 View

How can i resolve the "final solutuin is not converged" error in Comsol for my heat transfer simulation??

I have been trying to simulate heat transfer problem in Comsol 5.5 for long time but it always throw an error stating: "Failed to find a solution. Maximum number of Newton iterations...

28 February 2021 8,626 3 View

Exit velocity of natural gas from pressurized tank?

Hi Guys. I'm a mechanical engineer and have a bit trouble, would be very glad if you could help me with my questions. I have a pressurized tank which contains Natural Gas at 200 Bar and 293...

26 February 2021 6,253 3 View

Anyone that can help with Maxquant TMT16plex which is missing?

Hi I am very new to proteomics analysis. I have got raw files from core facility running thermofisher TMT 16plex 4 hours. I cannot find on maxquant the option TMT16Plex there is only up to 11...

25 February 2021 1,675 3 View

How to properly calculate the fluid solid heat transfer between polypropylene matrix and glass fiber in a porous medium?

I'm building a cfx model of thermoplastic pultrusion process on ansys and i have a doubt on how is the proper way to set this parameter in a porous medium

24 February 2021 1,915 1 View

How to properly calculate Interfacial area density in a porous domain?which are possible value for glass fiber?

I'm doing a cfx simulation of a multiphase flow in pultrusion and i set the Interfacial Area density in the heat exchange of a porous medium in this way IAD=Total fiber lateral surface of fiber...

23 February 2021 6,043 1 View

Model Volume fraction and magnetic field applications of nanofluids in ANSYS?

Hi I am working recently on a project where I have to study how the thermal properties or heat transfer enhancement of nanofluids as the volume fraction changes, or if a magnetic field is applied...

22 February 2021 961 2 View

Help with assigning pressure boundary conditions in FLUENT on a large structure?

Hello, I created a very tall tower (>1000m) and applied pressure boundary conditions at the inlet (bottom) and outlet (top) that correspond to the pressure are their relative altitudes....

22 February 2021 9,972 4 View

Harimi Djamila

Greetings,

An urban heat island is an urban area or metropolitan area that is significantly warmer than its surrounding rural areas due to human activities [Source Wikipedia].

There is a study carried out in Sri Lanka on Urban Heat Island of the Colombo Metropolitan Area, Sri Lanka, Based on Landsat Data (1997–2017). The study was carried out by Manjula RanagalageRonald C. EstoqueRonald C. EstoqueYuji MurayamaYuji Murayama. It is published in June 2017 International Journal of Geo-Information 6(June):17. Full text is available via Researchgate.

Link: Article An Urban Heat Island Study of the Colombo Metropolitan Area,...

Thank You

Patrick Moriarty

Urban heat release from vehicles, industry, buildings etc is only one contributor to the urban heat island effect. Others include the reduction of surfaces for evapotranspiration (because of impermeable roofs and paving) and the 'canyon effect' with tall buildings.

Julia Lucchese

I believe that the urban heat that you refer to is just one contributing factor to the creation of a phenomenon (the Urban Heat Island). Absorption of solar short-wave radiation, air pollution, anthropogenic heat (from vehicles, industry, etc.), sky obstruction, waterproof surfaces and decreased wind speed can all contribute to modifications of the energy balance in cities and the creation of the UHI.