Is the a way to contol flow (Flow velocity) without impacting pressure value?

I have a pipe with 10 mm in Diameter and 2 bar pressure, the fluid velocity is 200 m/s, the fluid is air. is there a way to reduce velocity without affecting the pressure value?

25 February 2021 7,187 3 View

What cause the beating of this signal?

I am trying to simulate the impact of a sinusoidal force on a Beam, yet I registred this beating signal (Displacement by time). The freaquency of excitation was the same as the first natural...

19 February 2021 5,872 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 3,520 3 View

Is the concrete tensile stress-strain curve a tenth of its compressive one ?

The known compressive stress-strain curve of concrete corresponds to the negative strains despite the selected axis shift to the positive strains values. The concrete tensile yield stress is known...

27 December 2020 7,309 7 View

Is it worthy to publish in journals suggested by Publisher even it is not indexed?

I tried to submit my 1st paper at one of Springer journal, yet it been rejected because that the field of research is not contained in the journal. after that II been contacted by Springer...

13 July 2020 5,620 13 View

Prostaglandin E2 ELISA competitive Kit ?

Hello, We measured the level of pge2 in the culture supernatant of rat cells using a competitive elisa kit. the problem is that we got values out of range, which means that the rate of pge2 was...

05 May 2019 3,467 2 View

Anti-inflammatory effect of plant extract on macrophage cells J 774 ?

Hello, If we want to evaluate an anti-inflammatory effect from a plant extract on macrophage cells J774, should we put it before or after stimulation with Lps/IFN. Usually we put the extract...

18 February 2019 9,821 4 View

What are the dynamic cyclic stresses on loaded steel and concrete materials ?

We suggest in the attached figures the deformations paths for the dynamically loaded steel and concrete materials in order to get a comparison scale between these two materials when they are used...

12 February 2018 8,365 3 View

No title

07 June 2017 3,242 4 View

Magnetism impact on a structure

Hi all. I would like to start a small discussion about something that I am real curious about. since there is FSI ( Fluid structure Interaction) I wounder if Software like ANSYS give a chance to...

01 January 1970 5,918 1 View

error in running a model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

error in modelling model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

MGL tools

20 June 2021 0 0 View

i have some problem with chtMultiRegionSimpleFoam

--> FOAM FATAL ERROR: Maximum number of iterations exceeded From function Foam::scalar Foam::species::thermo::T(Foam::scalar, Foam::scalar, Foam::scalar, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar) const) const [with Thermo = Foam::hConstThermo >; Type = Foam::sensibleEnthalpy; Foam::scalar = double; Foam::species::thermo = Foam::species::thermo >, Foam::sensibleEnthalpy>] in file /home/ubuntu/OpenFOAM/OpenFOAM-4.1/src/thermophysicalModels/specie/lnInclude/thermoI.H at line 66. FOAM aborting #0 Foam::error::printStack(Foam::Ostream&) at ??:? #1 Foam::error::abort() at ??:? #2 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::calculate() at ??:? #3 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::correct() at ??:? #4 ? at ??:? #5 __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6" #6 ? at ??:?

24 March 2021 0 0 View

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10?

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10? Since, the growth curve from day 2 to 10 won't be like the "Logistic curve" it might not follow logistic...

03 March 2021 1,401 3 View

What is the production process of CaFe ferroalloys?

I looking for ferro calcium production process

03 March 2021 1,755 4 View

Resistor definition in Piezoelectric bimorph with ANSYS workbench

Hello, good day! I am trying to simulate similar bimorph piezoelectric harvester with below commands. However, the output power doesn't change with resistor value. Please help to find the reason. ET,10,CIRCU94,0 !SET UP RESISTOR R,1,100000 !RESISTANCE VALUE TYPE,10 !SET ELEMENT TYPE E,1,2 !CREATE RESISTOR BETWEEN NODES 1 AND 2 Thanks in advance Regards,

02 March 2021 0 0 View

Do you know any MR image dataset?

I would like to research on MR images (0.5T and 3T). Can you please suggest some websites that I can download dataset including both 0.5T and 3T MR images? Thank you.

02 March 2021 7,735 3 View

Which is suitable for use with Python? MySQL or SQL Server?

Which is suitable for use with Python? MySQL or SQL Server? What is your suggestion?

01 March 2021 3,422 3 View

How to Eliminate cosine error and abbe error in LASER measurement system(for example Rhenishaw XL80)?

I like to do project in laser measurement system. My objective is to eliminate or reduce the cosine error, abbe error in Laser measurement system. I have Rhenishaw XL80 system. Please tell the...

28 February 2021 4,890 3 View