Power Plant Engineer

Curriculum Vitae

PERSONAL DETAILS:

Name: PhD. Klemen Oblak

Address: Vojsko 19a, 1217 Vodice

Phone: +386********

E-Mail: *****.******@*****.***

Birth: 12.5.1981

Born in: Ljubljana

Nationality: Slovenian

Status: free

COMPUTER PROGRAMMS KNOWLEDGE:

- LS-DYNA (also Ls-Opt und Ls-Tasc)

- ANSYS (Multiphysics – APDL script programming, CFX, Workbench)

- Hypermesh

- 3D Modeling with ProEngineer, Catia V5

- Other programs: CorelDrawX5, MatLab (not Simulink), Mathematica, MS Office, Optis

Works (within Solid Works), LaTeX

LANGUAGES:

- English (higher middle level)

- German (middle level)

- Serbo-Croatian (middle level)

EXPERTISE:

- Continuum mechanics (Elasto-Plastic-, Thermal-, Flow-Mechanics Theory)

- Numerical methods FEM and FVM, solids and fluids (flow analysis, stress analysis,

vibration analysis, thermal analysis, solid-fluid interaction, static and transient

analysis, nonlinear and damage of materials modeling, particles transport, etc.)

- Implicit and Explicit simulations

- Parametric and topology optimization

- 3D solid and surface modeling with documentation

- Prototyping and experiment validation

- Complicated mesh modeling with hexahedron applied where possible

Description of projects, profession experiences, work studies and doctoral

thesis

• 09/2012-08/2013

Company Hirtenberger Automotive Safety, Austria

Simulation engineer

During this period, the following activities or projects were made:

Participation in development of a new concept for Audi A5 rollover protection

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system, calculations with LS-Dyna for all specified standards, namely quasi static

loading in different directions, pressure and dynamic loading, damping elements,

such as wedge in tight contact simulations. Experimental validation of the results.

Suggesting constructors on the optimization of the system, according to maintenance

function, weight and cost as well.

Simulating and verifying the results of the pedestrian protection system trigged with

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the actuator mechanism at front cover of the car for Daimler S-Class and Volvo S80.

Pedestrian protection system of the front cover for Volkswagen Touran, simulating

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and verifying the results, dummy impact (only at the cover component) at different

drive speeds of the car.

Inflatable structures (that is an aluminum profile in the front of the car, trigged with

-

the powder similar as Air Bag, which is then used as a pedestrian protection) with

different loadings and geometries simulated. Frontal crash with holder for Daimler,

side crash for Audi simulating and verifying experimental results. Bending process

simulations as well as leg collision. Interpreting the results and advising to

constructors.

Various numerical simulations of powder combustion as fluid-solid interaction in

-

actuators, particles transport system, optimization of materials stress-strain curve,

topology optimization of the plastic holder for BMW and other predevelopment

projects.

09/2006 -07/2012

University of Ljubljana, collaboration with other Companies and Institutes (Domel d.d.,

household devices; Hydria Climate Institute d.o.o., Litostroj-Power d.o.o., hydro power

plants, Institute Jozef Stefan d.d., Faculty of Electrical Engineering, Ljubljana)

Doctoral Thesis

Title: Multi-parameter geometry optimization of selected turbo machine elements

Activities done under this period of Time:

Script programing in Ansys Multiphysics with tendency to build parametric models

-

for axial impeller (used in air conditioning devices) and radial impeller with housing

(used in a vacuum cleaner electro motors). With the usage of Supercomputer

capacities then to find better geometry, forming the so called multi-parameter

numerical optimization process for increasing the aerodynamic efficiency of the

impellers in Ansys CFX and also topology optimization according to strength of the

housing. Documentation design in ProEngineer Wildfire, validation of the results with

prototypes.

Calculations of strength and vibration analysis of highly loaded turbo-machine

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elements of the Kaplan power plant with Ansys Workbench and Multiphysics. Fluid

flow simulations with Ansys CFX for Accumulation Lake with Kaplan power plant.

Consulting engineers to optimize the design.

Development of parametric model and flexible mesh of jet impingement heat

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transfer system for ITER.

Lenses and reflectors development due to the light simulations with Optis Works

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Studio, applications for LED lights.

Simulations of security mechanism with Ls-Dyna.

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Lectures at the University and conferences.

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FUTURE PLANS

My future research plans are focused on multiparameter geometry optimization of a real

world industrial products exploiting professional software tools and supercomputer

cappacities. Using modern approach I inted to improve product quality, i.e. material

consumption, safety functioning, working efficiency, etc. Since our natural resources are

limited, I belive that careful and optimal product planning with cooperation and research will

contribute to a better future.

REFERENCES

• K. Oblak, P. Korošec, F. Kosel, J. Šilc, Multi-parameter numerical optimization of selected

thin-walled machine elements using a stigmergic optimization algorithm, TI=Thin-walled

structures ISSN: 0263-8231.- Vol. 45, no. 12 (2007), Seite 991-1001

• B. Končar, N. Prachai, K. Oblak, Effect of nozzle sizes on jet impingement heat transfer in

He-cooled divertor, TI=Applied Thermal Engineering ISSN: 1359-4311.- Issue 6-7, Vol. 30

(May 2010), Seite 697-705

• P. Korošec, J. Šilc, K. Oblak, F. Kosel, An impeller shape optimization using t he differential

ant-stigmergy algorithm, TI=7th International Conference on Parallel Processing and Applied

Mathematics: Gdaosk, 9-12, September 2007.- Seite 52

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