Optimisation of a Side Inlet for H2 Entry into an Ultrasonic Spray Pyrolysis Device

An ultrasonic spray pyrolysis (USP) device consists of an evaporation and two reaction zones equal length, into which aerosol with a precursor compound enters, where nanoparticles are formed in the final stage. As part this research, we simulated geometry side inlet, gas (H2) enters tube by using numerical methods. Mixing carrier (N2) occurs at entry H2. In initial part, performed theoretical calculation simulation ANSYS CFX, while geometries basic studied models were prepared Solidworks. The inlet H2 included study position radius respect to USP device, as well angle diameter inlet. simulation, chose typical flows both gases (N2, H2) range 5 L/min 15 L/min. results show that best is bottom, existing does not allow for. Subsequently, temperature was selected flows; 150 °C considered zone 400 other zones—as case for Au nanoparticle synthesis. experiment on selecting input parameters those that, theoretically, most appropriate—a constant flow three different N2 (5 L/min, 10 L/min). simulations suitable tool studying UPS obtained comparable experimental tests showed increased can prevent backflow effectively, redesign needed ensure proper mixing. Thus, CFX package be used evaluate optimal properly, so reconstruct current improve future devices.