Piano key weirs (PKWs) with crown parapet walls effectively manage water levels and maximize storage. However, their efficiency is compromised by interactions between flow submerged outlets during rising levels. This study investigates novel wall designs to improve PKW performance reduce submergence effects. The experiment focuses on a fixed 12.6 cm weir height. Three configurations are tested:...

Additive Manufacturing (AM) offers a range of possibilities in fluid flow research. An existing 2.5 m open channel experiment contains set standard weirs which are limited design. This research will compare experimental AM (e.g. labyrinth, piano, catenary), that would not be possible on some laser-cut polymer or machined aluminium weirs. Due to the bespoke complex nature weirs’ design other man...

Abstract Side weirs are widely used in hydraulic engineering applications. The studies on the subject have been generally focused classical and labyrinth side weirs. However, same is not true for piano key (PKSW) a straight channel. weir (PKW) has high discharge capacity compared with In this study, characteristics of trapezoidal (TPKSW) channels were investigated experimentally. all experiment...

Over the past decades, significant advances have been achieved in hydraulic structures for dams, namely water release such as spillway weirs, chutes, and energy dissipators. This editorial presents a brief overview of eleven papers this Special Issue, Advances Spillway Hydraulics: From Theory to Practice, frames them current research trends. Issue explores following topics: inlet structures, tr...

Long crested weirs are gaining popularity amongst the hydraulic engineers owing to obvious hydraulic advantage of flow magnification. These weirs can pass much higher floods from the available width of a natural water course. Such weirs may also be introduced in water treatment plants for mixing of chemicals. This paper discusses the advantages of long crested weirs, such as duckbill and labyri...

Making music on a professional level requires a maximum of sensorimotor precision. Chronotype-dependent fluctuations of sensorimotor precision in the course of the day may prove a challenge for musicians because public performances or recordings are usually scheduled at fixed times of the day. We investigated pianists' sensorimotor timing precision in a scale playing task performed in the morni...

The purpose of this study is to design a portable virtual piano. By utilizing optical fiber gloves and the virtual piano software designed by this study, the user can play the piano anywhere at any time. This virtual piano consists of three major parts: finger tapping identification, hand movement and positioning identification, and MIDI software sound effect simulation. To play the virtual pia...