Thermal fluid dynamic analysis of the MEGAPIE target heat exchanger in steady state and transient conditions
| dc.contributor.author | Maciocco, Luca | |
| dc.contributor.author | Sorrentino, Luca | |
| dc.date.accessioned | 2014-04-01T08:33:07Z | |
| dc.date.available | 2014-04-01T08:33:07Z | |
| dc.date.issued | 2003-01 | |
| dc.description.abstract | The MEGAwatt PIlot Experiment (MEGAPIE) project has the aim to demonstrate the feasibility of a liquid Lead-Bismuth target for spallation facilities at a beam power level of 1 MW. About 650 kW of thermal power has to be removed from the target through a bunch of 12 pin-coolers, using a diathermic oil as secondary coolant. In order to improve the heat exchange in the oil side, a spiral is introduced in the oil riser, which enforces a swirling flow thus increasing the Reynolds number and the heat transfer coefficient. A single-pin experimental rig was set up and tested in the ENEA-Brasimone facility. A detailed CFD simulation of the experiment was carried out by CRS4, showing the capability of the simulation to give a quantitatively correct prediction of the heat exchange mechanisms in the cooling pin. In order to analyse the performances of the actual Megapie Target Heat eXchanger (THX), the thermal-hydraulic simulation of a sector of the THX, including only one of the 12 pin coolers, has been carried out by CRS4 in steady state and transient conditions, with the assumption of periodical flow-conditions along the THX circumference. The main tasks of this work were the assessment of the global performances of the THX and the evaluation of the thermal field in the solid structure, to be used successively for the calculation of thermal stresses in the target structures. | IT |
| dc.identifier.uri | http://hdl.handle.net/11050/752 | |
| dc.language.iso | en | IT |
| dc.subject | CFD | IT |
| dc.subject | Reynolds number | IT |
| dc.subject | pin-cooler | IT |
| dc.subject | flow | IT |
| dc.subject.een-cordis | EEN CORDIS::FISICA E SCIENZE ESATTE::Matematica, statistica::Modellazione matematica | IT |
| dc.subject.een-cordis | EEN CORDIS::FISICA E SCIENZE ESATTE::Fisica::Fisica dei fluidi | IT |
| dc.subject.een-cordis | EEN CORDIS::ELETTRONICA, INFORMATICA E TELECOMUNICAZIONI::Multimedia::Visualizzazione, realtà virtuale | IT |
| dc.title | Thermal fluid dynamic analysis of the MEGAPIE target heat exchanger in steady state and transient conditions | IT |
| dc.type | Report | IT |