Management of Chronic Migraine (Ardhavabhedaka) through Ayurvedic herbo-mineral drugs : A Case Study

Migraine is a neuro vascular disorder characterized by recurrent attacks of pulsatile headache of varying intensity and is generally accompanied with nausea and vomiting, sensitive to light and sound. It is most common headache that generally afflicts ~15% of women and 6% of men. WHO has ranked migraine as a no. 19 among all the diseases worldwide causing disability. In Ayurveda it is well correlated as Ardhavabhedaka, one of the Shiroroga out of 11 mentioned by Acharya Sushruta   based on the similarities in etiology, pathophysiology, symptoms and treatment principles. Ardhavabhedaka is a Tridoshaja Vyadhi. In allopathic Science many pharmacological strategies like, Antidepressants, Antiseizure drugs, and BP lowering medications (In hypertensive) are commonly used for the quick relief from Migraine pain but it adds drowsiness, insomnia and depression too; as a complication. This case study is about a patient having Chronic migraine for 3 years with generalized burning sensation all over the body, insomnia and stress. Ayurvedic Management with inclusion of Panchkarma procedures like shirodhara and nasya along with internal herbomineral medications have helped immense to get rid off the symptoms

Augmentation in thermal efficiency of three sides over one side concave dimple roughened ducts

We present experimental investigations and comparison on thermal efficiency of solar thermal air heater (SAH) with 1-side and 3-side concave dimple roughened ducts; under the Reynold’s number (Re) range of 2500 - 12500; relative roughness pitch (p/e) of 8 – 15; and relative roughness height (e/Dh) of 18 - 0.045. Maximum thermal efficiency was observed at p/e = 12 and e/Dh = 0.036. The increase in thermal efficiency of 3-sides over that of 1-side roughened duct is found to be about 44 - 56 % for varying p/e and 39-51 % for varying e/Dh. Present results and understanding is useful in practically designing an efficient solar thermal air heater

Performance analysis of three sides solar air heater having roughness elements as a combination of multiple-v and transverse wire on the absorber plate

Artificial roughness has been found to enhance the thermal performance from the collector to air in the solar air heater duct. This paper presents the results of experimental investigation on thermal performance of three sides solar air heater roughened with combination of multiple-v and transverse wire. The range of variation of system and operating parameters is investigated within the limits of relative roughness pitch of 10−25, relative roughness height of 0.018 −0.042, angle of attack of 30°−75° at varying flow Reynolds number in the of range of 3000−12000 for fixed value of relative roughness width of 6. The augmentation in fluid temperature flowing under three side’s roughened duct is found to be 36.57% more than that of one side roughened duct. The maximum thermal efficiency is obtained at relative roughness pitch of 10 and relative roughness height of 0.042, and angle of attack of 60°. The augmentation in thermal efficiency of three sides over those of one side roughened duct is found to be 46−57% for varying values of relative roughness pitch, 38−50% for varying values of relative roughness height, and 40−46% for varying values of angle of attack

Performance Analysis of Three-sides Concave Dimple Shape Roughened Solar Air Heater

Three-sides artificially roughened solar air heaters perform better than one-side roughened ones under identical operating conditions. The present paper is an outcome of the experimental investigations conducted upon three- and one-side concave dimple roughened ducts. The present investigation is carried out under the mass flow rate range (0.0060-0.0250) kg/s, relative roughness pitch (p/e) 8-16 and relative roughness height (e/Dh) 0.018-0.045. Thermal performance characteristics of three-sides and one-side roughened duct has been analyzed, compared and validated. The variation in plate temperature along the test length of the roughened duct has an appreciable impact on the heat transfer from the plate to the underside flowing air. The collector’s surface temperature is found to be 21% lower in the three-sides than the one-side roughened duct. Plate temperature excess for both three-sides and one-side roughened duct has been analyzed and compared. The plate temperature excess range for three-sides roughened duct is significantly lower (12.5-28.5 °C) compared to one-side roughened duct (17.5-35.5 °C). The augmentation in fluid (air) temperature flowing under three-sides concave dimple roughened duct is found to be 34.87% more than one-side roughened duct. The augmentation in thermal performance due to the provision of roughness geometry in the form of concave dimple shape on the three-sides over one-side roughened duct is found to be 39-56% for varying p/e and 44-51% for varying e/Dh depending upon the operational mass flow rate of air and roughness geometry. The maximum thermal efficiency is obtained at relative roughness pitch of 12 and relative roughness height of 0.036. The results for efficiency ratio along with parametric variation influence on performance of the roughened ducts have also been discussed in detail

Thermo-hydraulic performance of solar air heater having multiple v-shaped rib roughness on absorber plates

This paper presents the performance analysis of the effect of geometrical parameters having multiple v-shaped rib roughness on the airflow side of the absorber plates. Mathematical approach and solution procedure for the analysis of such a solar air heater has been developed theoretically and MATLAB code generated for the solution of the mathematical equations. The effect of parameters such as flow Reynolds number and Relative roughness height on the thermohydraulic performance have been examined and compared with the conventional flat plate solar air heater. A substantial improvement in thermal efficiency of roughened solar air heater as compared to smooth one due to appreciable enhancement in heat transfer coefficient. The enhancement in heat transfer coefficient is also accompanied by a considerable enhancement in pumping power requirement due to the increase in friction factor