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Why Online Technical Courses?
 
A PROBLEM OF FUND
When we finish our academic studies at the university and access to the world of work for the first time, we realize about the separation between the academic formation and the company work. Unfortunately, this is an endemic problem that has a difficult solution, for this reason the problem persists for a long time.

Most companies need people with real knowledge and skills. A degree is not enough, and it is necessary to demonstrate day by day some capabilities that are supposed to us but that we have to justify with facts, not with words.
 
 
OVERVIEW TODAY
The incorporation to the professional world is probably one of the most critical moments for the recent graduates, the reason is that they are in a situation of inferiority with respect to other professionals with more experience. This limits their ability to be hired or prevents them from doing so under conditions that may be considered adequate for their degrees.

If the recent graduate is lucky, the company can bet on him and provide him with the necessary training. This involves a risk for the company since it must allocate its own or subcontracted resources to third parties to train the new employee and then the latter could leave for another company. For this reason, many companies prefer to hire a professional who is already trained and with some experience, although they must pay a little more.

Once you enter the loop, it is difficult to get out, the recent graduate wants to work but the companies tell him that he has been discarded from the selection process due to lack of experience. And the experience cannot be acquired without working, so a graceful exit can be complicated, although sooner or later it usually comes out one way or the other.

In any case, the recent graduate must be able to acquire, as quickly as possible and with great efficiency, the necessary knowledge that will open the door to enter the world of work, and once inside, allow him to carry out his work with great solvency, to achieve recognition by their superiors and this power to level up and promote.

It is necessary to get hired, but it is also important to get on the right foot, prove yourself and promote. One very important thing is to avoid being stuck, which can cause us frustration, interrupting our evolution in the professional and economic aspect.

Another existing problem, which is derived from the tremendous technological advance, is the continuous appearance of new jobs, some of them non-existent only a few years ago. On the other hand, some sectors are reducing the demand for personnel. This forces many professionals to try to reorient their professional trajectory to adapt to the demand.


OUR OBJECTIVES
Our main objective is to provide a real solution to the problem of training deficit, both for the recent graduates, and for the experienced professionals who want to retrain or reorient their careers.

Other of our objectives are:
  • Making knowledge available to our students at an expert level through short courses that allow them to be combined with a normal working day.
  • Providing students with the availability to take the course at any time to make the best use of their time. The courses are available 24 hours a day from Monday to Sunday.
  • Availability to take the course from anywhere in the world, just by having internet access.
  • Providing courses at reasonable costs that making them affordable for students with limited financial resources. It should also be appreciated that with online training, additional costs that we would have in face-to-face courses (travel, subsistence, stays, fees, taxes, etc.) are eliminated.

PROVIDING VALUE
In order to carry out our objectives, it was necessary to have teachers with great professional experience, if possible still active. That made it possible to provide high-quality training that can only be acquired after years of professional practice. What is known as "expert knowledge". The “general knowledge” should already be possessed by the student at the end of their university studies.

The next step was to put the expert teacher in communication with the students. The two main drawbacks are the time available to complete the course within a whole workday and the costs of the training action, which must be reasonable and affordable for the recent graduate who does not have large financial resources. Both difficulties have been solved through online training courses.

Logically, not all technical courses are suitable for online training, so we have only selected courses that are 100% suitable for this type of training.

An important aspect that we have taken into account was the pedagogical adaptation, expert teachers may lack this type of training, which can lead to difficulties in developing teaching. For this reason, in the preparation of our courses we have the support of personnel with pedagogical training, who intervene to ensure that the training activity allows the acquisition of technical knowledge with total efficiency.

Our academic model seeks to learn by doing, this means that our courses have a series of exercises and educational activities that will allow the student to acquire their knowledge and skills effectively and practically. Especially important for us is obtaining good learning performance, this means acquiring knowledge at a relatively low cost of hours, for this the correct preparation of teaching materials is of decisive importance.

Finally, it is worth mentioning that our training plan follows a continuous improvement program, for this all students who finish a course must carry out a quality survey where they can assess the different parameters of the course, as well as indicate aspects that they consider to be improvable. Based on this information, corrective actions are implemented whenever necessary within the continuous improvement program.

 
Published 2020-05-18 12:13:44 by C. Rodríguez | Open
 
Code_Aster, free CAE software based on finite elements
 

Code_Aster is a software for finite element analysis and numerical simulation in structural mechanics and multiphysics.

Code_Aster feature:

- Type FEM : Linear & non-linear static / dynamic, thermal & fluid analysis
- Type of License : GPL
- Developer : Electricite de France (EDF)
-
Download
: Code_Aster
 

It was developed by the French company Electricite de France (EDF), for the study and maintenance of plants and power grids. He was released under the GNU General Public License in October 2001. Most documentation is available in French.

Code_Aster is a solver or processing engine, i.e. it does not include preprocessing and post - processing tools. This means that meshing and presentation of the solutions must be realized using other softwares for instance SALOME and ParaView respectively. In this regard, the version SALOME-MECA allows full functionality.

Their  applications span multiple disciplines: mechanical, thermal analysis, hydrodynamics, metallurgy, hydration, drying ...  Stationary or transient conditions, and both linear and nonlinear processes can be modelled. It also includes specific tools for fatigue, deformation, fracture, contact, geotechnics, porous materials, etc.


Code_Aster contains 1500000 lines of source code, mostly in Fortran and Python, and is constantly being developed, updated and improved with new models. The qualitative standards required by the nuclear industry have provided improvements to reach the highest levels of functionality and accuracy, which have been validated by independent comparisons with analytical and experimental results.

The software is provided with about 2000 test, dedicated to elementary grade, and are useful as examples. Code_Aster documentation includes over 14000 pages. Most of this documentation is only in French language.



RELATED TRAINING COURSES:

To receive training related to this subject, we recommend Technical Courses:

http://www.technicalcourses.net

Technical Courses is a company spezialized on online courses, most of them closely linked to trends in the labor market and the training needs of companies.

- Code Aster online course


 
Published 2016-04-14 12:56:15 by | Open
 
Hull modeling using Rhinoceros 3D
 
The most common way to model a 3D hull is using its plane forms. A plane form represents the water lines, as well as the longitudinal and transverse vertical sections. 



Plane forms of a small fishing ship.

By symmetry, only half ot the shift is drawn in the plane forms.

The most appropiate softwares for 3D modeling of the hull are Maxsurf and Rhinoceros, both work from NURBS surfaces. NURBS (acronym for non-uniform rational B-spline) is a mathematical model widely used to generate and represent curves and surfaces

The advantages of the 3D modeler Rhinoceros, are its facility to handle and its versality to adjust the geometry of the hull.
It also has tools for smoothing the hull (fairing), which is essential for a good 3D modeling and can be used later in the phase of numerical analysis.


Rhinoceros 3D was created by Robert McNeel & Associates. Recently, it has become popular in different industries, due to its multiple functions and relative low cost. It includes extensive import and export options since it is compatible with many softwares. Several additions (add-ons) are available, also developed by Robert McNeel & Associates, photorealistic rendering for raytracing (Flamingo) and KeyShot, photorealistic rendering non (Penguin) and animation (Bongo).

The version
RhinoMarine is adapted to the special characteristics required by naval designers including windbreaks, developable surfaces, curvature analysis, etc. In addition, RhinoMarine has the Orca3D supplement, an external plug-in that provides a full suite of specialized tools for shipbuilding design and analysis in Rhino.

An easy procedure to model a hull using Rhinoceros 3D is indicated below:
  • In Rhinoceros, it is possible to use a bipmap image as background. Using this image, it is possible to realize the plane forms. 
  • These curves can be used to generate NURBS surfaces corresponding to the true forms of the hull. 
  • Rhinoceros has a very useful tool "surface from network of curves". We can not use the curves that do not meet all conditions of validity. It is neccesary to selected curves intelligently to represent hull shapes.
  • It is neccesary to reconstruct and smooth NURBS surfaces.
 
Published 2016-04-11 11:42:11 by Carlos Rodríguez & Joshua | Open
 
CFD analysis of a biologically-inspired undulating marine propeller
 
Introduction:

Throughout history, practical implementation of rotating propulsion mechanisms was highly used because they are very easy to deal with; however, undulating mechanisms, which are very common in the nature, have been poorly considered.

Nowadays, engineering of marine vehicles and machines is maturing and new propulsion methods are being considered. The designs based on biologically-inspired propulsors are being increasingly studied. The problem is that many mechanisms of propulsion are not well understood yet. An important advance which helps to understand the hydrodynamics of biological swimming is the computational fluid dynamics (CFD). There are a lot of researchers who applied the CFD to study biological  swimming, for example, Borazjani, Sotiropoulos, Carling, Fauci, Liu, Lamas, Lewin, Sfakiotakis, Triantafyllou, Shen, etc.

In this work, a CFD model was developed to analyze the fluid flow over an undulating propeller. It is organized as follows.

CFD analysis:

The design of the experimental prototype was done from the CFD analysis to assess the most suitable configuration. The experimental prototype, shown in the figure, consists of an undulating foil propeller of 0.52 m wavelength, 0.02 m amplitude and 0.2 m width.

Innovacións Mariñas” Research Group (Coruña University - Spain) developed an undulanting propeller based on the patent No. 200002012. This patent refers to undulating systems and bodies in fluid mediums




The pressure field is indicated in the figure:




This is a video about the CFD simulation:




The main advantage of this system is that it is reversible, i.e., it has the same efficiency either operating forward or backward. This makes it ideal for vehicles that require high maneuverability.

COURSES RECOMMENDED:


imagencursoCFD with OpenFOAM online course

 
Published 2014-04-04 17:31:42 by Isabel Lamas & J.D. Rodríguez | Open
 
CFD analysis of the marine engine MAN 7S50MC
 

The MC series of the two-stroke MAN B&W Diesel were introduced in the early 80s of last century. Its main application is the propulsion of all types of vessels, medium and large sizes. These engines have also been used in terrestrial applications, mainly for production of electrical power.

 


An advantage of the MAN B&W MC series is that they incorporate the uniflow scavenging, much more efficient than the former competitors, such as Sulzer RND, MAN KSZ, among others, who employ loop or cross scavenging. 

Two-stroke engines generally have a drawback which has a great influence on the development of its operating cycle. This problem is motivated by the neccesity of the four phases of the operating cycle (expansion, exhaust, intake and compression ) in a single turn of the crankshaft, therefore the periods required for each of the phases are necessarily shorter than a four-stroke engine. Between them, the most critical stages are exhaust-intake, when the charge in the cylinder is renewed. For this reason, the design of the engine is extremely important.




The process of displacement the flue gases out of the cylinder, and filling with fresh air charge, called "scavenging", has a decisive influence on fuel consumption, power and pollution. 

 The following figure shows the airflow (red) and exhaust gas (blue) inside one of the cylinders.




As can be seen in the previous figure, incoming air is used to blow out or exhaust gas sweep and meanwhile filling the space with fresh air. 

The following figure was obtained through a CFD analysis. It shows the velocity distribution of the flow in the cylinder during the renovation of the load.



The following figure shows the mass fractions exhaust (blue) and air (red) for a tour from 90° to 270° crank angle.





In this CFD analysis, the free software OpenFOAM was employed. The reason is that this is an open source and thus it allows a complete manipulation of the governing equations. This is essential to carry out this type of analysis. It is necessary to adjust several parameters and some of them cannot be modified with other commercial softwares.

To read more about the realization of a CFD study of the scanning system of a type of two slow times we encourage you to read the article " Computational Fluid Dynamics Analysis of theScavenging Process in the MAN B & W 7S50MC Two-Stroke Marine Diesel Engine " published in journal of Ship Research, one of the publications with the highest impact factor in the world in its sector, with a type a classification according to the basis of JCR (journal Citation Reports) data.


COURSES RECOMMENDED:


imagencursoCFD with OpenFOAM online course



LINKS:

[5Grupo de Innovaciones Mariñas de la Universidad de La Coruña
 
Published 2016-02-12 15:30:35 by Carlos Rodriguez & Isabel Lamas | Open
 
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