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Thursday, December 4, 2008

PhD project in coupled vibrations in hydro power rotors

PhD-project in coupled vibrations in hydro power rotors

With new operating conditions and aging machines in the hydro power industry, rotor dynamic research in this area is becoming more important. The need for reliable operations of the hydro power machines is of worldwide importance, and to this end the development of better simulation techniques and methods are necessary. When failures do occur, it is important that dynamical questions regarding the cause of the failures can be identified and answered.

As such, there is no other international group today that continuously works with rotor dynamics in hydro power units. Therefore it is expected that our research will have an important impact even at the international level. At LTU and Vattenfall VRD, we have been doing research in rotor dynamics since 2001, leading to several research projects and new findings that have been published in international journals. There are many crucial rotor dynamic issues in hydro power applications. Some examples are rotor interaction with bearings, fluid-rotor structure interaction and electromagnetic fields. We are working in all areas through collaborations within the Swedish hydropower centre (SVC). SVC was initiated 2006 and has as aim to develop competence within the hydro power technology sector. An outcome of the several workshops is the decision by the SVC to initiate a new research project in coupled vibrations in hydro power rotors. Coupled vibrations have
been studied extensively in rotor dynamics and it has been found that coupling can result in unexpected vibrations, and in some cases failure due to self excited motions or parametric excitations. The target in the project is to determine when such problems can occur and also find out the causes of the problems. Thus, we are now searching for a new PhD student in Solid Mechanics to work on these issues

Method

We work with both analytical and numerical methods to study the rotor dynamics. For numerical simulations, we usually use Matlab or own programs, but we do also have access to several other commercial programs should they be required . The new models should be evaluated either in test rigs ( LTU or Vattenfall research & development) or in real hydro power stations. Since several problems are of nonlinear nature, it becomes essential to use nonlinear methods in the work.

Suitable background

The requirement for the appointment is a Master of Science degree in Mechanical Engineering or Applied Physics directed towards mechanics. A strong analytical interest is more than desirable for the project to run smoothly. It is traditionally difficult to attract females to the field of mechanics. Therefore we are actively working for an environment which attracts both females and males

Your work is to perform supervised research, read appropriate courses and participate in departmental activities such as teaching.

For more information about SVC see www.svc.nu and about the project www.ltu.se/tfm/avd/solidmechanics

Contact person: Prof. Jan-Olov Aidanpää, tel: 070-2592531, email: joa@ltu.se

Application

Application marked with Ref no with merits should be sent to Registrator, Luleå tekniska universitet, 971 87 Luleå or registrator@ltu.se

Ref no: 2951-08

Last date for application is: 2008-12-12

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The way to AMINEF in Gedung Balai Pustaka

American Indonesian Exchange Foundation
Balai Pustaka Building, 6th. Floor
Jl. Gunung Sahari Raya No. 4
Jakarta 10720, Indonesia

1. The buses which goes to Senen Bus Station all of them pass through Gedung Balai Pustaka. Especially which route is through Pasar Baru .

2. Bus Transjakarta, from Blok M you have to change the bus 2-3 times.
Way 1 : from Blok M change the bus in Dukuh Atas bus stop to the bus towards Pulogadung, then take a bus in Pramuka bus stop towards Ancol, this bus pass through Gedung Balai Pustaka. The closest bus stop (Budi Utomo) is about 800 meters from Gedung Balai .
Way 2 : From Blok M take the bus in the Harmoni Bus Stop, the bus towards Pulogadung, get down in Senen Bus Stop and walk about 800 meters, or from this bus stop take the bus towards Ancol and get down as mentioned in way 1. About the distance, this two bus stops is about the same. (It is better if you take ojek or bajaj from this bus stop to Gedung Balai Pustaka)

3. If you take taxi with old tariff (TL=Tarif Lama) from blok M with no traffic jam is about Rp. 30.000,00.

4. From Blok M use bus Patas AC 76. Gedung Balai Pustaka is in the right side, after you pass through Depag, and say to conductor "Balai Pustaka"

5. Use a busway from Blok M towards Kota, get down in Sawah Besar bus stop. From here take a Mikrolet M12 towards Senen. After cross road Wahidin and before senen get down and cross the street.

Living Cost in Germany

Living Cost in Germany is vary from city to city, but this is th case if you stay in Aachen, Germany
Student accommodation or private sharing : 180 - 230 euros per month
Food : 10 - 12 euros per day (if eating outside)
Transport for students : free within Aachen and until Koln and Dusseldorf in regional trains)

Living Cost In Austria

Living Cost in Austria is depending on the city, for example the Capital of Austria, Vienna:
- Dormitory is about 250-400 euro per month.
- Living Cost 200-400 euro per month.
- Transportation 128 euro per 4 months (student and age < 26), or 49 euro per month (ordinary)

For visa, it has to be a letter from the University/Scholl in Austria. It takes about 2-3 months.

Where to do GMAT Test

GMAT Tests are held in Jakarta, Indonesia :
1. EEC Slipi +62-21 5320044 or +62-215323176
2. Kaplan GMAT Preparation +62-81388908450, +62-21 5211588, +62-215211701 (Information abaout this test can be asked in that number)
3. Or this number +62-213159225

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