Chittagong University of Engineering & Technology

About: Chittagong University of Engineering & Technology is a education organization based out in Chittagong, Bangladesh. It is known for research contribution in the topics: Renewable energy & Dielectric. The organization has 1200 authors who have published 1444 publications receiving 10418 citations. The organization is also known as: Engineering College, Chittagong & Bangladesh Institute of Technology, Chittagong.

Design and performance evaluation of PIC16F77A microcontroller based fluid velocity meter

Abstract: This paper elucidates simple design method of a low cost digital velocity meter based on PIC16F77A microcontroller This digital velocity meter identifies the linear velocity of any fluids as well as any kind of movable objects LASER and light dependent resistor are two cardinal sensors to design this meter By this sensor any moving object or moving fluid's initial and final time is calculated at a certain distance An electrical switch measure this time duration of certain distance very precisely With this input signal by using the velocity formula the single chip microcontroller compute the velocity Then the computed formats of velocity are displayed in a 16×2 character LCD It also shows the time duration of objects to pass the two sensors This design process is more effective than others as it is more economical, efficient and simple

Storm-surge modelling for cyclone Mora in the northern Bay of Bengal

Abstract: Storm-surge modelling in the northern Bay of Bengal still remains a challenge due to the complex tidal nature and poor observational coverage. In this study, using satellite information, a coupled ...

Power Generating Slabs: Lost energy conversion of human locomotive force into electrical energy

Abstract: In the world of modern technology, newer sources of energy and new methods of power generation are two important area of interest for researchers and engineers. Recently a new method is established to generate power from the lost energy of a human during his/her locomotive period. A piezoelectric sensor based costly product is available in some developed countries which can generate power from human locomotive force, but it is not suitable for countries like Bangladesh where power demand is very high but economy is not highly developed. In this paper we will explain the design and construction method of a “Power Generating Slab” which can be used to generate power by establishing anywhere of the walking zone of human (roads, stairs, pavements, dais etc). This is done in a low cost process with locally available equipments (micro-generator, iron plate, rack pinion gear, free-wheeling system, spring etc). These slabs can easily sustain human weight when people walk along them. With a small deformation of spring, the weight (mechanical energy) of a human body is converted into electrical energy by rotating a micro-generator with the help of a ‘rotating shaft’ coupled with it. From each foot step almost 10V–12V is generated. This energy is stored in a rechargeable battery which can be used as a power source to drive loads. Assembly of some power generating slabs can give better result. This is a method which is reusable and it will run for a longer period.

Design and analysis of a gold-coated dual-core photonic crystal fiber bio-sensor using surface plasmon resonance

Abstract: In this work, a simple gold-glazed dual-core photonic crystal fiber (PCF) is inspected by using surface plasmon resonance for biochemical sensing. Based on high sensing performance and chemical substantiality, gold (Au) is selected as plasmonic material to coat the external surface of the design. The target analyte and gold layer are placed on the outer surface of the PCF to offer fabrication simplicity. A central elliptical air hole is embellished to increase structural asymmetry between both cores hence the sensor came out with improved sensing performances. The numerical analysis of the proposed design is investigated employing the finite element method (FEM). The maximum optimized value of wavelength sensitivity is recorded at about 8000 nm/RIU with a resolution of 12.5×10−6 and amplitude sensitivity is achieved 1443 RIU−1 for the refractive index of 1.39. Furthermore, a detailed study is also performed to investigate the effects of varying sensor's geometrical parameters such as the thickness of gold and analyte layer, pitch distance, diameters of cladding air holes, geometrical shapes of air hole at core. According to these results along with simple structural design, the proposed model can be practical enough for biochemical and bio-molecular substance detection.