How does an archaeologist think?

Every profession has its own way of how to solve a problem (see my article https://www.researchgate.net/publication/319644185_Thinking_like_an_engineer and my question...

11 December 2019 10,019 10 View

How to think like Sherlock Holmes?

The sheer number of publications and their breadth make it impossible to keep up and to know a little bit about everything. We are forced to be selective or to read scantly. Sherlock Holmes a...

02 March 2019 7,574 25 View

What does an engineer do? Alternatively, what is engineering?

It has been said scientists investigate what which already exists; Engineers create what which has never been. I am pondering the question "What is engineering?" It has been said that engineers...

01 February 2019 4,401 14 View

What is an acceptable (i.e. tolerable) failure rate for water main pipeline?

A key consideration in the design of a natural gas transmission pipeline is the location class of the pipeline. The location class is a geographic area along the pipeline classified primarily...

10 November 2018 4,776 3 View

What engineers know and how they know it?

10 November 2018 7,659 9 View

Which should come first at the university, teaching or research?

Fifty years ago if you had a problem you would run to the head of your department as she/he knew all. Industry and government agencies used to wheel them in when there was a problem; but not now....

09 October 2018 9,550 2 View

How you do the fracture mechanics or X-FEM analysis in Abaqus if you only have an input file (no CAE file)?

I have an Abaqus input file of a complex model. It is very time-consuming to create a CAE model. I am wondering how crack definition can be added to the input file. Material id gray cast iron and...

08 September 2018 7,842 5 View

How do you determine the Remaining Useful Life (RUL) of cast iron water mains?

In some cities water mains are made of grey cast iron and may be 150 year old. Some of these pipe show sign of distress in the form of corrosion. These are huge assets and cannot be replaced...

08 September 2018 7,940 0 View

Is there a validated diagnostic and prognostic of cast iron penstock valve for water mains?

Many big cities established their water supply and sewer systems very early during the last century. Many of the penstocks and pressure conduits are over 50 years old. Corrosion and erosion have...

08 September 2018 9,539 1 View

What is an engineering judgment?

02 March 2018 6,016 10 View

Is there any tutorial for comsol general projections?

Hi, im trying to make a projection in a 3d comsol model. I have a non uniforme chanel and my intention is to get the average tempreture in the y-z cross section and se the average tempreture...

02 March 2021 4,624 4 View

Why are the velocities so high in my Boussinesq approximation Fluent simulation?

Hello, I have a mechanism where air rises due to convective flows. In this simulation, nothing is driving the air except this. I understand that the Boussinesq approximation only works for small...

02 March 2021 4,910 3 View

Is it possible to do piezoelectric coupling in ANSYS-APDL or COMSOL between tapered substrate and rectangular piezoelectric patch?

How to do Piezoelectric coupling in ANSYS-APDL or COMSOL between tapered substrate and rectangular piezoelectric patch? Piezoelectric coupling between the rectangular substrate and rectangular...

02 March 2021 9,833 3 View

What is the characteristic length to determine the Reynolds number for the scattered turbulent fluid flow?

Dear all, I just saw this example in FB on the difference between laminar flow and turbulent flow. The flow from a pipe hits the sink and scattered. The flow from the pipe is characterized as...

02 March 2021 1,999 5 View

Why Austenite grains in steel show much more twinning than ferrite grains?

It is oftentimes said to be a distinctive metallographic trait that differentiates a fully austenitic and a fully felly ferritic steel without etching that might distinguish between two. Why...

02 March 2021 728 2 View

Which is a lucid standard comprehensive book to guide on psychological scale construction and its standardization?

02 March 2021 7,082 3 View

How to define and get results (stresses) for certain points of a model in abaqus, using python? When the size of the model changes?

I want to do a parameter study of a aixsymmetric cylinder in Abaqus. I want to create several jobs where I get the stresses for 3 different points in my model. These points are defined. I wrote a...

01 March 2021 10,078 1 View

Joint behaviour in Abaqus is not captured well?

I am working on roof joint and trying to simulate the behaviour in Abaqus. I am successful in running the model but the final graph does not follow the experimental curve in the negative direction...

01 March 2021 6,661 3 View

Can we distinguish the type of free fluid inside the pelvic and abdominal cavities whether blood or serous fluid using the ultrasound?

during ultrasound examination of acute abdomen, sometimes we see free fluid , can we know the type of fluid ,whether blood or not , using ultrasound only? if yes , what are the sonographic...

01 March 2021 7,476 4 View

How much pressure we can reduce at the outlet to avoid Reverse Flow?

I am simulating Heat Exchanger. I have tried and tested all the methods to resolve this issue from the internet like refining mesh, improving skewness and orthogonal quality ,extending outlet to...

01 March 2021 6,985 3 View