Apparatuses, methods and storage media associated with cooling one or more heat-generating components of an electronic device are disclosed herein. In embodiments, an electronic device may include a tank that may include a dielectric fluid and one or more heat-generating components. The electronic device may further include one or more transducers coupled with the tank. The transducers may be configured to generate an ultrasonic wave that controls movement of the dielectric fluid at a location within the tank. Other embodiments may be described and/or claimed.