[ABSTRAK
Perkembangan industri elektronik untuk produk berkinerja tinggi yangditandai dengan munculnya piranti elektronika berukuran minimalis sertamenggunakan daya yang rendah memerlukan sebuah sistem pendinginan yanghandal dan efisien sehingga mampu beroperasi secara optimum. Pada penelitianini teknologi yang digunakan untuk mendinginkan komponen piranti elektronikatersebut menggunakan jet sintetik yang memanfaatkan gerakan membran secarakontinyu dengan menghasilkan cincin vortex untuk mempercepat prosesperpindahan panas. Penelitian yang dilakukan pada study ini bertujuan untukmencari nilai frekuensi, jenis gelombang eksitasi, serta bentuk orifis jet sintetikyang menghasilkan performa pendinginan yang baik untuk model jet sintetikimpinging, mencari pengaruh jarak tumbukan (impact) jet sintetik impingingterhadap laju perpindahan panas konveksi untuk proses pendinginan, mencarimodel cavity jet sintetik impinging dan jet sintetik cross flow yang memilikikehandalan dalam proses pendinginan. Penelitian ini dikerjakan menggunakanpendekatan komputasional dan eksperimental. Pada pendekatan komputasionaldigunakan software CFD (computational fluid dynamics) yang mendefinisikankondisi batas jet sintetik dengan asumsi dinding bergerak (moving wall) danmodel turbulensi k-omega SST (Shear Stress Transport). Kemudian model ujieksperimental menggunakan model jet sintetik tipe impinging dan model jetsintetik tipe cross flow. Model-model tersebut memiliki perbedaan dalam hal arahaliran jet sintetik terhadap media yang akan didinginkan berupa heatsink. Moduseksitasi yang dipergunakan untuk menghasilkan aliran jet sintetik tersebutmenggunakan sinyal listrik berupa gelombang sinusoidal, square dan triangulardengan variasi frekuensi 80 Hz, 120 Hz dan 160 Hz. Sinyal listrik tersebutdihasilkan oleh sweep function generator. Hasil yang diperoleh dari kajiankomputasional dan eksperimental tersebut memberikan informasi bahwa jetsintetik mampu memberikan efek pendinginan pada objek yang akan didinginkan.Parameter dari variasi frekuensi eksitasi jet sintetik dan arah aliran jet sintetikmemberikan efek yang beragam dalam hal pendinginan. Dari hasil penelitian yangdilakukan tersebut diperoleh modus eksitasi yang paling baik menggunakangelombang eksitasi square 120 Hz untuk model jet sintetik impinging kemudiankombinasi gelombang eksitasi sinusoidal 120 Hz dan square 80 Hz memberikanefek pendinginan yang paling optimum untuk tipe jet sintetik cross flow.Konsumsi energi yang dibutuhkan oleh jet sintetik sebanyak 1,78 joule untukmenurunkan temperatur dari 53 oC menjadi 48,2 oC sedangkan kipasmenghabiskan konsumsi energi sebanyak 142,2 joule untuk dapat menurunkantemperatur dari 53 oC menjadi 48,2 oC.

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ABSTRAK
The development of the electronics industry for high performance products arecharacterized by the emergence of electronic devices minimalist size and lowpower required to use a cooling system that is reliable and efficient thus able tooperate at its optimum. In this study, the technology used to cool electronicdevices such components using synthetic jet which utilizes a continuousmembrane movement by generating vortek ring to accelerate the process of heattransfer. Research conducted in this study aimed to explore the value offrequency, type of wave excitation, as well as the shape of the synthetic jet orificeproduces good cooling performance for the model synthetic jet impinging,collision distance for influence synthetic jet impinging on the rate of convectionheat transfer to the cooling process, looking for synthetic jet impinging cavitymodels and synthetic jet cross flow which has reliability in the process of cooling.The study is done using the method of using computational and experimentalapproaches. In the computational approach used CFD (computational fluiddynamics) software which defines the boundary conditions assuming a syntheticjet moving wall model with k-omega SST (Shear Stress Transport) turbulence.Then test the model using the experimental model of type impinging synthetic jetand model of synthetic jet cross flow type. The models differ in terms of syntheticjet flow direction of the media that will be cooled heatsink. Mode excitation isused to produce the synthetic jet flow using electrical signals in the form of wavessinusoidal, square dan triangular with variations in frequency of 80 hz, 120 hzand 160 hz. The electrical signals generated from the tool named sweep functiongenerator. Results obtained from the computational and experimental informationthat synthetic jets can provide a cooling effect on the object to be cooled.Parameters of synthetic jet excitation frequency variation and direction of flow ofsynthetic jet placement varied effects in terms of cooling. From the results of theresearch conducted most excitation modes obtained using either 120 hz squarewave excitation for the type of impinging synthetic jet models then thecombination of 120 hz sinusoidal excitation wave and 80 hz square provide themost optimum cooling effect for condition type cross flow model of synthetic jet.Energy consumption required by the synthetic jet 1.78 joules to lower thetemperature of 53 oC - 48.2 oC while fans spend energy consumption 142.2 jouleto be able to lower the temperature of 53 oC-48.2 oC., The development of the electronics industry for high performance products arecharacterized by the emergence of electronic devices minimalist size and lowpower required to use a cooling system that is reliable and efficient thus able tooperate at its optimum. In this study, the technology used to cool electronicdevices such components using synthetic jet which utilizes a continuousmembrane movement by generating vortek ring to accelerate the process of heattransfer. Research conducted in this study aimed to explore the value offrequency, type of wave excitation, as well as the shape of the synthetic jet orificeproduces good cooling performance for the model synthetic jet impinging,collision distance for influence synthetic jet impinging on the rate of convectionheat transfer to the cooling process, looking for synthetic jet impinging cavitymodels and synthetic jet cross flow which has reliability in the process of cooling.The study is done using the method of using computational and experimentalapproaches. In the computational approach used CFD (computational fluiddynamics) software which defines the boundary conditions assuming a syntheticjet moving wall model with k-omega SST (Shear Stress Transport) turbulence.Then test the model using the experimental model of type impinging synthetic jetand model of synthetic jet cross flow type. The models differ in terms of syntheticjet flow direction of the media that will be cooled heatsink. Mode excitation isused to produce the synthetic jet flow using electrical signals in the form of wavessinusoidal, square dan triangular with variations in frequency of 80 hz, 120 hzand 160 hz. The electrical signals generated from the tool named sweep functiongenerator. Results obtained from the computational and experimental informationthat synthetic jets can provide a cooling effect on the object to be cooled.Parameters of synthetic jet excitation frequency variation and direction of flow ofsynthetic jet placement varied effects in terms of cooling. From the results of theresearch conducted most excitation modes obtained using either 120 hz squarewave excitation for the type of impinging synthetic jet models then thecombination of 120 hz sinusoidal excitation wave and 80 hz square provide themost optimum cooling effect for condition type cross flow model of synthetic jet.Energy consumption required by the synthetic jet 1.78 joules to lower thetemperature of 53 oC - 48.2 oC while fans spend energy consumption 142.2 jouleto be able to lower the temperature of 53 oC-48.2 oC.]