Jet cooling systems for laser mirrors

Аuthors

Leonov E. V.^*, Shanin Y. I.^**

NII NPO "LUCH", Podolsk, Russia

*e-mail: leonovev@sialuch.ru
**e-mail: ShaninYuI@sialuch.ru

Abstract

Experimental studies of the hydraulic resistance and heat transfer of a jet water cooling system for a laser mirror have been carried out. The studies were carried out in the range of Reynolds numbers from 300 to 3500 both when water jets flow from nozzles onto the non-finned heat exchange surface of the mirror substrate and when liquid flows into the nozzles. The results obtained and the results of other authors were used later in the analysis of the design from the point of view of its optimization in order to obtain high coefficients of reduced heat transfer and thereby reduce thermal displacements of the optical surface of the laser mirror.

Keywords:

laser mirror, jet cooling system, hydraulic resistance, heat transfer enhancement

References

1. Subbotin V.I., Kharitonov V.V. Teplofizika okhlazhdayemykh lazernykh zerkal [Cooled laser mirror thermophysics]. Teplofizika vysokikh temperatur, 1991, vol. 29, no.2, pp. 365–375. (In Russ.)

2. Kharitonov V.V. Teplofizika lazernykh zerkal [Thermophysics of laser mirrors]. 3-rd edition. Moscow, Izdatel’stvo Moskovskogo inzhenerno-fizicheskogo instituta, 1993, 152 p. (In Russ.)

3. Shmakov V.A. Silovaya optika [Power optics]. Moscow, Nauka, 2004, 318 p. (In Russ.)

4. Malashko Ya.I., Naumov M.B. Sistemy formirovaniya moshchnykh lazernykh puchkov. Osnovy teorii. Metody rascheta. Silovyye zerkala [Systems for the formation of high-power laser beams. Fundamentals of the theory. Methods of calculation. Power mirrors]. Moscow, Radiotehnika, 2013, 328 p. (In Russ.)

5. Zeygarnik Yu.A., Ivanov F.P., Maslakova I.V., Silina N.N. Rekomendatsii po teplovomu raschetu i raschetu deformirovannogo sostoyaniya silovykh elementov metallooptiki dlya lazernykh tekhnologicheskikh ustanovok [Recommendations on thermal calculation and calculation of the deformed state of power elements of metal optics for laser technological installations]. Moscow, Institut vysokikh temperatur Rossiiskoi akademii nauk, 2013, 96 p. (Preprint No. 2-511). (In Russ.)

6. Apollonov V.V. Silovaya optika [Power optics]. Kvantovaya elektronika, 2014, vol. 44, no. 2, pp. 102–121. (In Russ.)

7. Yudaev B.N., Mikhailov M.S., Savin V.K. Teploobmen pri vzaimodeystvii struy s pregradami [Heat transfer during the interaction of jets with obstacles]. Moscow, Mashinostroenie, 1978, 247 p. (In Russ.)

8. Dyban E.P., Mazur A.I. Konvektivnyy teploobmen pri struynom obtekanii tel [Convective heat exchange at jet flow of bodies]. Kyiev: Naukova Dumka, 1982, 303 p. (In Russ.)

9. Abramovich G.N. Teoriya turbulentnykh struy [Theory of turbulent jets]. Moscow, Fizmatgiz, 1960, 715 p. (In Russ.)

10. Chernykh V.A. Istecheniye strui v tupik [The expiration of the jet to a dead end]. Izvestiya Akademii nauk SSSR. Seriya: Mekhanika zhidkosti i gaza, 1966, no. 2, pp. 139–140. (In Russ.)

11. Koshelev S.B., Subbotin V.I., Kharitonov V.V. Sostavlyayushchiye teploperedachi pri struynom techenii vody v ogranichennom prostranstve [Components of heat-transfer in the jet flow of water in a limited space]. Teplofizika vysokikh temperatur, 1985, vol. 23, no. 3, pp. 542–548. (In Russ.).

12. Gordeev V.F., Koshelev S.B., Subbotin V.I., Kharitonov V.V. Teplootdacha orebrennykh stenok pri struynom okhlazhdenii [Heat transfer of finned walls during jet cooling]. Izvestiya Akademii nauk SSSR. Seriya: Energetika i transport, 1986, no. 2, pp. 134–141. (In Russ.)

13. Shanin Yu.I., Shanin O.I. Intensifikatsiya teploobmena v sistemakh okhlazhdeniya lazernykh zerkal [Intensification of heat transfer in laser mirror cooling systems]. Trudy chetvertoy Rossiyskoy natsional’noy konferentsii po teploobmenu. Dispersnyye potoki i poristyye sredy. Intensifikatsiya teploobmena. Moscow, Moskovskiy energeticheskiy institut, 2006, vol. 6, pp. 297–300. (In Russ.)

14. Spravochnik po teploobmennikam [Handbook of heat exchangers]. In 2 vol. English translation. Ed. by B.S. Petukhov, V.K. Shikov. Moscow, Energoatomizdat, 1987, vol. 1, 560 p. (In Russ.)

15. Shanin O.I., Shanin Yu.I., Fedoseev V.P. Teploobmen v mnogosloynykh protochnykh sistemakh okhlazhdeniya pri odnostoronnem nagreve [Heat transfer in multilayered direct-flow cooling systems with unilateral heating]. Teplofizika vysokikh temperatur, 1991, vol. 29, no. 2, pp. 308–316. (In Russ.)