Air

The mixture of gases present in the earth's atmosphere consisting of oxygen, nitrogen, carbon dioxide, and small amounts of other gases. | Review and cite AIR protocol, troubleshooting and other methodology information | Contact experts in AIR to get answers

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Questions related to Air

Why do the air flow results vary totally when adding scalar in CFD ?

Dear All, We are using Autodesk cfd to calculate the air flow in a single sided naturally ventilated room, where air flow depends only on buoyancy due to temperature difference between inside and...

25 February 2021 9,797 4 View

Is is possible to pole with corona poling pellets of the sample material instead of thin films?

As it is highly probable that pellets will have a higher degree of air gaps and voids than thin films, is it possible to pole the samples with corona poling nevertheless? Or is there the...

24 February 2021 1,509 1 View

Have you ever experiencing air vent trouble in fermentation process?

Dear all, My research group is currently working with a 12-litre fermenter. Somehow, if we do the fermentation for more than 20 hours, the process will be more prone to contamination. Our current...

23 February 2021 2,070 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 10,154 4 View

How to find the air side pressure drop in a spiral fin tube bundle cross flow heat exchanger?

How to find the air side pressure drop in a spiral fin cross flow heat exchanger? The pressure difference at the inlet and outlet is very low compared to the experimental results, which I...

18 February 2021 1,252 2 View

Is it correct to identify an air mouvement by the Venturi effect in buildings ?

Knowing that the Venturi effect is used most in tubes (according to my basic knowledge in physics) to increase the speed of air or liquids by reducing the tube volume, my question is if we have...

17 February 2021 1,429 1 View

Can an airplane stay up in the the air without moving forward just like helicopter ?

How the lift and weight cancel each other perfectly for a helicopter to stay it motionless? Because its propeller do generate huge amount of lift due to air pressure plus a blend of air stream...

09 February 2021 4,140 14 View

How to define two different phases with different species?

Hello all, I am trying to model CO2 being dissolved in a bubble column filled with water. For mass transfer definitions, I need to define two phases: for instance, liquid and gas, where the liquid...

08 February 2021 2,879 3 View

How to calculate time needed to evacuate a pressure from a tank using a pump?

Dear I have an air reservoir with 50 bar pressure , this reservoir is fed by 2 bar air pressure source, I would like to instal air pump ( 30 m3/h ) to evacuate the 2 bar fed pressure so I always...

06 February 2021 3,672 3 View

Functionality on MWCNT can possible without using vacuum oven?

I want to synthesis functional MWCNT from pristine MWCNT using acid treatment but I haven't vacuum oven for drying but I have a normal hot air oven. So may it possible to use hot air oven for...

02 February 2021 8,608 3 View

How can I remove bubble in WPU film?

I am trying to prepare water-based polyurethane films. When dried air bubbles were formed and destroys the film homogeneity, then I can't use this for mechanical test because of defects. Is there...

26 January 2021 844 1 View

How do they fill/replace metal hydrides in vessels?

Surely they will want to avoid contact with air/moisture, so what is the procedure for this?

23 January 2021 570 2 View

What is the air and water fraction in wave induced spray or splash?

Hello everyone, I was wondering when a wave spray or splash occurs due to wave breaking, what is the percentage of water or air in the volume of spray that we see? I need to have a rough...

21 January 2021 7,861 1 View

Can I calculate the average from the data which are collected every 30 minutes for ANOVA?

I artifically elevated the air temperature in the heated plot by 3-celsius degree compared to that in the control for 7 days. I want to figure out the effect of the temperature manipulation on...

21 January 2021 1,324 8 View

In a holly-core fiber, should the effective index of the fundamental mode be higher or lower than the core refractive index(n=1)?

Hi, I was wondering in hollow-core fibres should the effective index of the fundamental mode be higher or less than the core's refractive index (in this case, n = 1 because the core is filled...

17 January 2021 2,331 3 View

¿Cuánto afecta la agroindustria en la calidad del aire?

El proceso de producción de azúcar conlleva situaciones que ponen en riesgo la calidad del aire, esto debido al proceso de quema en la plantaciones y el proceso de producción lleva el uso de...

02 January 2021 7,314 4 View

Can someone give some ideas for DAC in Aviation?

I'm trying to use this DAC technology in the aviation industry. Can anyone suggest some ideas on how to do so? I too have some ideas and am willing to work on them. My work will be designing a...

02 January 2021 5,442 2 View

Ansys fluent : Can you share the steps to solve Multiphase analysis problem in Ansys Workbench.?

Its a research problem where air and water are interacting inside the cooling pad.

25 December 2020 7,277 3 View

How do i handle Ti and/or Aluminium powder. Since in the instruction on the container is written that CATCHES FIRE SPONTANEOUSLY IF EXPOSED TO AIR ?

i am working on max phase preparation......i am a newly joined PhD scholar. I wanted to make MAX phase of Ti3AlC2 , in most of the literature they are using the metal powder of Ti and Al for the...

23 December 2020 7,275 8 View

Dear all, Is there any model available to predict the "possible diseases" based on the available pollutant concentration in air ?

In detailed human health risk assessment models. Is there any model that can predict the possible disease.

21 December 2020 7,655 5 View

How to calculate the flow rate required for fluidization for a fluidized bed gasifier ?

We need to calculate the flow rate of air required for fluidization of the bed. We have a compressor which gives air at 7 bar and a 1 bar rotameter for measuring the flow rate in LPM. How can I...

16 December 2020 2,232 3 View

Can anyone give me tips for using SolidWorks Flow Simulation for analysis of miscible gases?

Specifically, I have a chimney that is emitting smoke and nearby is an inlet duct that is drawing air for cooling a certain device. I need to know the percentage of smoke (contaminated air) that...

13 December 2020 5,726 2 View

How to model bubble in Ansys Fluent?

I am seeking to model a simple bubble growth/collapse in Ansys. I have tried using 2D, VOF with an initial patch air circle geometry surrounded by water. I include surface tension and make the air...

10 December 2020 9,266 3 View

Are there any alternatives to Corning's Transwell inserts for Air Liquid Interface culture?

There is apparently a worldwide shortage (due to COVID) of these 0.4micron pore, polystyrene membrane transwells...Are there any companies that make suitable, good quality alternates as we are...

09 December 2020 6,916 2 View

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