Papers by Florin Nedelcut
Ultrasonic flow meters, as all velocity or inference type devices, require an adequate flow strea... more Ultrasonic flow meters, as all velocity or inference type devices, require an adequate flow stream conditioning in order to assure an accurate performance. Typical flow conditioning consists of straightening the upstream and downstream of the measuring section. The upstream section usually contains a tube bundle, which allows for the upstream section to be reduced in length. This tube bundle serves to eliminate any swirl in the flow stream before reaching the meter, presenting a symmetrical velocity profile to the turbine rotor. Some ultrasonic flow meters may produce a non-uniform pulse output, which can prove a wide span of repeatability. For such cases where is a need to correct the velocity flow profiles which affect the robustness of the integration method, this research work tries to develop a mathematical modeling and simulation in MATLAB and Microsoft Excel, with the purpose to combine the individual acoustic path measurements into a full volumetric flow rate measurement pro...
Ultrasonic flow meters, as all velocity or inference type devices, require an adequate flow strea... more Ultrasonic flow meters, as all velocity or inference type devices, require an adequate flow stream conditioning in order to assure an accurate performance. Typical flow conditioning consists of straightening the upstream and downstream of the measuring section. The upstream section usually contains a tube bundle, which allows the upstream section to be reduced in length. This tube bundle serves to eliminate any swirl in the flow stream before reaching the meter, presenting a symmetrical velocity profile to the turbine rotor. Some ultrasonic flow meters may produce a non-uniform pulse output, which can prove a wide span of repeatability. For such cases where is a need to correct the velocity flow profiles which affect the robustness of the integration method, this research work tries to develop a mathematical modeling and simulation in MATLAB and Microsoft Excel, with the purpose to combine the individual acoustic path measurements into a full volumetric flow rate measurement procedu...
Remote Sensing of Environment
Thanks to the improved spatial and temporal resolution of new generation Earth Observation missio... more Thanks to the improved spatial and temporal resolution of new generation Earth Observation missions, such as Landsat 8 and Sentinel-2, the potential of remote sensing techniques in mapping land surface phenology of terrestrial biomes can now be tested in inland water systems. .
In environmental monitoring, human presence is necessary in order to monitor, record and control ... more In environmental monitoring, human presence is necessary in order to monitor, record and control the evolution of environmental parameters, but, at the same time, is to be avoided, because it is a disturbing and possibly intrusive element. A solution to this challenging dilemma is to use autonomous or remote controlled mobile sensors, which, in its turn, leads to the use of unmanned aerial vehicles (UAVs), similar to those already developed and used in the military field. UAVs have unmatched qualities that make them the only effective solution in specialised tasks where human presence either is not necessary, or is not allowed. Although the civil applications of the UAVs were developed later than military ones, there is already a wide range of civil UAVs. Nowadays, they are used in scientific, emergency, governmental or commercial missions. The environmental monitoring missions are already performed by some UAVs meant for scientific or emergency missions. This work presents some cur...
2021 International Workshop on Metrology for the Sea; Learning to Measure Sea Health Parameters (MetroSea)
The research presented in this scientific paper investigates an adaptive seismic isolation system... more The research presented in this scientific paper investigates an adaptive seismic isolation system meant to protect building structures subjected to a variety of seismic ground motions. This scientific paper presents a solution that is adequate for the seismic isolation of small buildings, bridges or viaducts, having main dimension less than 10 meters. The solution proposed by the authors is one of a composed type. The isolation system consists of sliding isolation bearings in combination with fluid viscous damper devices. The results of the research have revealed a favorable characteristic of this isolation system. The proposed system is therefore capable of simultaneously limiting the response of both sliding base isolation system and superstructure, for a large variety of seismic ground motions.
In environmental monitoring, human presence is necessary in order to monitor, record and control ... more In environmental monitoring, human presence is necessary in order to monitor, record and control the evolution of environmental parameters, but, at the same time, is to be avoided, because it is a disturbing and possibly intrusive element. A solution to this challenging dilemma is to use autonomous or remote controlled mobile sensors, which, in its turn, leads to the use of unmanned aerial vehicles (UAVs), similar to those already developed and used in the military field. UAVs have unmatched qualities that make them the only effective solution in specialised tasks where human presence either is not necessary, or is not allowed. Although the civil applications of the UAVs were developed later than military ones, there is already a wide range of civil UAVs. Nowadays, they are used in scientific, emergency, governmental or commercial missions. The environmental monitoring missions are already performed by some UAVs meant for scientific or emergency missions. This work presents some cur...
The optimization of liquid ultrasonic flow meter through modelling and simulation using the Reyno... more The optimization of liquid ultrasonic flow meter through modelling and simulation using the Reynolds and Nusselt number, is both a textbook and reference that engineers and technicians will want in their personal libraries. The three main objectives are: 1. A multipath meter with an integration method of velocity profile correction, to improve performance on high viscosity low Reynolds numbers applications. 2. Robustness in correcting asymmetric axial flow velocity profiles. 3. Compensation transverse flow components. Features include techniques such as velocity profile correction, accurate measurement at the lower flow range are shown in simulations.The type of oil samples which were considered are Light, Medium,Brad Penn,Heavy and Extra heavy oils. The use of analogies for modeling fluid flow,thermal and mechanical components. A brief introduction to computational fluid dynamics is presented, while any intelligent computer-literate person can run a CFD code.
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Papers by Florin Nedelcut