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In-House R&D and
Re­search Co­op­er­a­tion

The IFTA prod­uct port­fo­lio is based on more than two decades of ex­pe­ri­ence and con­tin­u­ous de­vel­op­ment through mod­ern re­search ef­fort.

IFTA op­er­ates its own R&D de­part­ment. One of the main ob­jec­tives of the re­search is to gain new knowl­edge about the caus­es of vi­bra­tions and how to avoid them. In­no­va­tive so­lu­tions are val­i­dat­ed by our de­vel­op­ments. Our re­search is the driv­ing force for prod­ucts that ful­fill high eco­nom­ic ef­fi­cien­cy and qual­i­ty.

IFTA GmbH was found­ed as part of a re­search project and re­search co­op­er­a­tion con­tin­ue to play a major role in the com­pa­ny also today. Co­op­er­a­tion with renowned uni­ver­si­ties as part of na­tion­al and EU re­search co­op­er­a­tion is an in­dis­pens­able com­po­nent of our in­no­va­tive strength.

 

We co­op­er­ate to­geth­er with:

Go to over­view re­search projects

Re­sult of a flow sim­u­la­tion in a gas burn­er.
Nat­u­ral fre­quen­cy anal­y­sis of a ring com­bus­tion cham­ber with 18 burn­ers.

Our Publi­ca­tions

Karl­stet­ter, R.; Rouwen­horst, D.; Wid­hopf-Fenk, R.; Her­mann J.; Raoofy, A.; Trini­tis, C.; Schulz, M.:
Turn­ing Dy­nam­ic Sen­sor Mea­surmeent from Gas Tur­bine Info In­sights: A Big Data Ap­proachPro­ceed­ings of ASME 2019 Turbo Expo: Tur­bo­ma­chin­ery Tech­ni­cal Con­fer­ence & Ex­po­si­tion (GT2019-912591), ASME, 2019.

 

Rouwen­horst, D.; Wid­hopf-Fenk, R.; Her­mann J.; Haringer, M; Beck­er J.; Ger­hard, J.; Nie­der­meier, J.:
Part-Load Limit Re­duc­tion of a Frame 9E Using a Pre­cur­sor for Com­bus­tion Dy­nam­ics. ASME. Turbo Expo: Power for Land, Sea, and Air, Vol­ume 4A: Com­bus­tion, Fuels, and Emis­sions ():V04AT04A028, 2018.


Rouwen­horst, D.; Her­mann, J.; Po­lifke, W.:
In situ iden­ti­fi­ca­tion strat­e­gy of ther­moa­cous­tic sta­bil­i­ty in an­nu­lar com­bus­tors. In­ter­na­tion­al Jour­nal of Spray and Com­bus­tion Dy­nam­ics, pp. 351–361, 2018.


Rouwen­horst, D.; Her­mann, J.; Po­lifke, W.:
On­line Mon­i­tor­ing of Ther­moa­cous­tic Ei­gen­modes in An­nu­lar Com­bus­tion Sys­tems Based on a State-Space Model. Jour­nal of Engi­neer­ing for Gas Tur­bines and Power 139 (2), 2017.


Rouwen­horst, D.; Her­mann, J.; Po­lifke, W.:
Bi­fur­ca­tion study of az­imuthal bulk flow in an­nu­lar com­bus­tion sys­tems with cylin­dri­cal sym­me­try break­ing. In­ter­na­tion­al Jour­nal of Spray and Com­bus­tion Dy­nam­ics 9 (4), pp., 438-451, 2017.


Müller, R.A.J.; Her­mann, J.; Po­lifke, W.:
Direct Drive Valve Model for Use as an Acous­tic Source in a Net­work Model. In­ter­na­tion­al Jour­nal of Acous­tics and Vi­bra­tion 21 (4), pp.  406-417, 2016.


Müller, R. A., Her­mann, J., & Po­lifke, W.:
Con­trol au­thor­i­ty over a com­bus­tion in­sta­bil­i­ty in­ves­ti­gat­ed in CFD. In­ter­na­tion­al Jour­nal of Spray and Com­bus­tion Dy­nam­ics. pp.39–52, 2016.


Rouwen­horst, D.; Her­mann, J.; Po­lifke, W.:
On­line mon­i­tor­ing of ther­moa­cous­tic eigen­modes in an­nu­lar com­bus­tion sys­tems based on a state space model. Pro­ceed­ings of ASME 2016 Turbo Expo: Tur­bo­ma­chin­ery Tech­ni­cal Con­fer­ence & Ex­po­si­tion (GT2016-56671), ASME, 2016.


Müller, R.A.J.:
Con­trol Author­i­ty for Ac­tive Damp­ing of Com­bus­tion In­sta­bil­i­ties. München, Tech­nis­che Univer­si­tät München, Diss, 2015.


Rouwen­horst, D.; Her­mann, J.; Müller, R.; Po­lifke, W.:
On the Per­for­mance of Sta­bil­i­ty Mar­gin Mea­sures for Ther­moa­cous­tic In­sta­bil­i­ties in Tur­bu­lent Com­bus­tion Sys­tems. 21st In­ter­na­tion­al Congress on Sound and Vi­bra­tion (ICSV21), 2014.


Kosztin, B.; Heckl, M.; Müller, R.; Her­mann, J.:
Ther­mo-Acous­tic Prop­er­ties of a Burn­er with Axial Tem­per­a­ture Gra­di­ent: The­o­ry and Ex­per­i­ment. In­ter­na­tion­al Jour­nal of Spray and Com­bus­tion Dy­nam­ics, pp. 67–84, 2013.


Müller, R. A. J.; Temm­ler, C.; Wid­hopf-Fenk, R.; Her­mann, J.; Po­lifke, W.; Stop­ford, P.:
CFD-Based Fea­si­bil­i­ty Study of Ac­tive Con­trol on a Com­bus­tion In­sta­bil­i­ty. 20th In­ter­na­tion­al Congress on Sound and Vi­bra­tion (ICSV20), 2013.


Hiller, S.; Her­mann, J.; Wid­hopf-Fenk R.:
High Pres­sure Com­pres­sor Sta­bi­liza­tion by Con­trolled Pulsed In­jec­tion. ASME. Turbo Expo: Power for Land, Sea, and Air, Vol­ume 8: Tur­bo­ma­chin­ery, Parts A, B, and C ():pp. 117-124, 2012.


Müller, R. A. J.; Her­mann, J.; Po­lifke, W.:
Direct drive valve model for use as an acous­tic source in a net­work model. Int'l J. Acous­tics & Vi­bra­tion 3, pp.  2450-2457, 2012.


Müller, R. A. J.; Her­mann, J.; Po­lifke, W.:
Sta­bil­i­ty lim­its and non-lin­ear char­ac­ter­is­tics of a self-ex­cit­ed com­bus­tion in­sta­bil­i­ty. 19th In­ter­na­tion­al Congress on Sound and Vi­bra­tion (ICSV19), 2012.

 


Müller, R. A. J.; Her­mann, J.; Po­lifke, W.:
Com­par­i­son of ac­tu­at­ing op­tions for ac­tive damp­ing of com­bus­tion in­sta­bil­i­ties. ISMA2012 Noise and Vi­bra­tion Engi­neer­ing Con­fer­ence, Jan­uary 2012.


Kosztin, B.; Heckl, M.; Müller, R. A. J.; Her­mann, J.:
In­sta­bil­i­ties in a model gas tur­bine com­bus­tor with dif­fer­ent mean-tem­per­a­ture pro­files. 18th In­ter­na­tion­al Congress on Sound and Vi­bra­tion, Rio de Janeiro, Brazil, July 2011.


Kosztin, B.; Heckl, M.; Müller, R. A. J.; Her­mann, J.:
In­sta­bil­i­ties in a model gas tur­bine com­bus­tor: The­o­ry and ex­per­i­ment. ICSV17, 17th In­ter­na­tion­al Congress on Sound and Vi­bra­tion, Cairo, Egypt, 18 - 22 July 2010.

Her­mann, J.; Hoff­mann, S.:
Im­ple­men­ta­tion of Ac­tive Con­trol in a Full-Scale Gas-Tur­bine Com­bus­tor. Chap­ter in the book "Com­bus­tion In­sta­bil­i­ties in Gas Tur­bine Engines: Oper­a­tional Ex­pe­ri­ence, Fun­da­men­tal Mech­a­nisms, and Model­ing" of Tim Lieuwen and Vigor Yang, Vol. 210, Progress in Astro­nau­tics and Aero­nau­tics Series, 210,Pub­lished by AIAA, 2006.


Schei­dler, S.; Mundt, C.; Met­ten­leit­er, M.; Her­mann, J.; Hiller, S.-J.:
Ac­tive sta­bil­i­ty con­trol of the com­pres­sion sys­tem in a twin-spool tur­bo­fan en­gine by air in­jec­tion. Pre­sent­ed at the 10th in­ter­na­tion­al Sym­po­sium on trans­port phe­nom­e­na and dy­nam­ics of ro­tat­ing ma­chin­ery, ISROMAC, Honolu­lu, Hawaii, March 07-11, 2004 (Paper ID num­ber 073).

Lein­hos, D.C.; Schei­dler, S.; Fot­tner, L.;Grauer, F.; Her­mann, J.; Met­ten­leit­er, M.; Orth­mann, A.:
Ex­per­i­ments in ac­tive stall con­trol of a twin-spool tur­bo­fan en­gine. Pre­sent­ed at the ASME TURBO Expo, Am­s­ter­dam, 3-6 June, 2002, GT 2002-2003.


Her­mann, J.; Orth­mann, A.:
Com­bus­tion Dy­nam­ics: Ap­pli­ca­tion of Ac­tive In­sta­bil­i­ty Con­trol to Heavy Duty Gas Tur­bines. Paper pre­sent­ed at the RTO AVT Course on “Ac­tive Con­trol of Engine Dy­nam­ics” pub­lished in RTO-EN-020 and held in Brus­sels, Bel­gium, May 14-18, 2001.


Her­mann, J.; Orth­mann, A.; Hoff­mann, S.; Beren­brink, P.:
Ac­tive and Pas­sive Con­trol of Com­bus­tion Os­cil­la­tions in a 260 MW Heavy-Duty Gas Tur­bine.
Paper pre­sent­ed at the EUROTHERM Sem­i­nar No 67, ECOS 2000 Pro­ceed­ings, held in En­schede, Nether­lands, July 2000.


Her­mann, J.; Orth­mann, A.; Hoff­mann, S.; Beren­brink, P.:
Com­bi­na­tion of Ac­tive In­sta­bil­i­ty Con­trol and Pas­sive Mea­sures to Prevent Com­bus­tion In­sta­bil­i­ties in a 260MW Heavy Duty Gas Tur­bine. Paper pre­sent­ed at the RTO AVT Sym­po­sium on "Ac­tive Con­trol Tech­nol­o­gy for En­hanced Per­for­mance Oper­a­tional Ca­pa­bil­i­ties of Mil­i­tary Air­craft, Land Ve­hi­cles and Sea Ve­hi­cles", held in Braun­schweig, Ger­many, May 8-11, 2000.


Her­mann, J.; Orth­mann, A. and Hoff­mann, S.:
Ap­pli­ca­tion of Ac­tive Com­bus­tion Con­trol to a Heavy Duty Gas Tur­bines. 14th Int. Symp. on Air­breath­ing Engines, 5-10 Sep 1999, Florence, Italy.


Her­mann, J.; Orth­mann, A. and Hoff­mann, S.:
Ac­tive Ista­bilty Con­trol of Com­bus­tion in Heavy Duty Gas Tur­bines. Sixth Int. Congress on Sound and Vi­bra­tion, 5-8 July 1999, Copen­hagen, Den­mark.


Hoff­mann, S.; Weber, G.; Ju­dith, H.; Her­mann, J.; Orth­mann, A.:
Ap­pli­ca­tion of Ac­tive Flame In­sta­bil­i­ty Con­trol for Heavy Duty Gas Tur­bines. Pro­ceed­ings of the Pow­erGen Europe Con­fer­ence, Frank­furt, 1999.


Hoff­mann, S.; Weber, G.; Ju­dith, H.; Her­mann, J.; Orth­mann, A.:
Ap­pli­ca­tion of Ac­tive Com­bus­tion Con­trol to Siemens Heavy Duty Gas Tur­bines. Pre­sent­ed at the Sym­po­sium of the AVT Panel on Gas Tur­bine Engine Com­bus­tion, Emis­sions and Al­ter­na­tive Fuels, Lis­bon, 12-16 Oc­to­ber, 1998.


Seume, J. R.; Vort­mey­er, N.; Krause, W.; Her­mann, J.; Hantschk, C.-C.; Zangl, P.; Gleis, S.; Vort­mey­er, D.; Orth­mann, A.:
Ap­pli­ca­tion of Ac­tive Com­bus­tion In­sta­bil­i­ty Con­trol to a Heavy Gas Tur­bine. ASME Asia 97 Congress and Ex­hi­bi­tion, Sin­ga­pur, 30. Septem­ber – 2. Ok­to­ber 1997. ASME-Paper 97-AA-119; auch veröf­fentlicht im ASME Jour­nal for Gas Tur­bines and Power, Vol. 120, No. 4, Oc­to­ber 1998, pp. 721-726


Casen­ti­ni, F.; Her­mann, J.; Vort­mey­er, D.; Gleis, S.:
NO- and CO-Re­duc­tion by Pul­sat­ing the Air Flow on a Swirl Spray Burn­er. Acts of the Fourth In­ter­na­tion­al Con­fer­ence on Tech­nolo­gies and Com­bus­tion for a Clean En­vi­ron­ment, Lis­bon 7-10 July 1997, Vol. II, Ses­sion 23.3, pp. 17-25.


Her­mann, J.; Hantschk, C.; Zangl, P.; Gleis, S.; Vort­mey­er, D.; Seume, J.; Vort­mey­er, N.; Krause, W.; Orth­mann, A.:
Ak­tive In­sta­bil­ität­skon­trolle an einer 170 MW Gas­tur­bine. 18. Deutsche-Nieder­ländis­ch­er Flam­men­tag, Delft/NL, 28.-29. Au­gust 97, VDI-Bericht No. 1313, S. 337-344.


De­labroy, O.; Lacas, F.; Poin­sot, T.; Can­del, D.; Hoff­mann, T.; Her­mann, J.; Gleis, S.; Vort­mey­er, D.:
A Study of NOx Re­duc­tion by Acous­tic Ex­i­c­i­ta­tion in a Liq­uid Fueled Burn­er. Com­bust. Sci. and Tech., Vol. 119, pp. 397-408, 1996.


Hantschk, C.; Her­mann, J.; Vort­mey­er, D.:
Ac­tive In­sta­bil­i­ty Con­trol with Direct Drive Servo Valves in Liq­uid-Fuelled Com­bus­tion Sys­tems. 26th Int. Sym­po­sium on Com­bus­tion, Naples, pp. 2835-2841, 1996.


Her­mann, J.:
An­re­gungsmech­a­nis­men und ak­tive Dämp­fung (AIC) selb­ster­regter Ver­bren­nungss­chwingun­gen in Flüs­sigkraft­stoff­sys­te­men. 1996


Her­mann, J.; Gleis, S.; Vort­mey­er, D.:
Ac­tive In­sta­bil­i­ty Con­trol (AIC) of Spray Com­bus­tors by Mo­du­la­tion of the Liq­uid Fuel Flow Rate.
Com­bust. Sci. and Tech., Vol. 118, pp. 1-25, 1996.


Zangl, P.; Her­mann, J.; Orth­mann, A.; Vort­mey­er, D.:
Mea­sure­ment of the Pe­ri­od­ic Flow In­sta­bil­i­ty Dur­ing a Self Ex­cit­ed Com­bus­tion Os­cil­la­tion by LDV. Eight In­ter­na­tion­al Sym­po­sium on Ap­pli­ca­tions of Laser Tech­niques to Fluid Me­chan­ics, July 8-11, Lis­bon, pp. 39.2.1-39.2.8, 1996.


Her­mann, J.; Zangl, P.; Gleis, S.; Vort­mey­er, D.:
Un­ter­suchung der An­re­gungsmech­a­nis­men selb­ster­regter Ver­bren­nungss­chwingun­gen an einem Ver­bren­nungssys­tem für Flüs­sigkraft­stoff. 17. Deutsch­er Flam­men­tag, Ham­burg-Har­burg, VDI-Bericht Nr. 1193, S. 251-260, 1995.


Her­mann, J.; Gleis, S.; Vort­mey­er, D.:
Ak­tive Dämp­fung selb­ster­regter Brennkam­mer­schwingun­gen (AIC) bei Druckz­er­stäu­ber­bren­nern durch Mo­du­la­tion der flüs­si­gen Brennstof­fzu­fuhr. 16. Deutsch­er Flam­men­tag, Clausthal-Zeller­feld, VDI-Bericht Nr. 1090, S. 615-624, 1993.

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